2007-06-17 [colin] 2.9.2cvs67
[claws.git] / src / procmsg.c
index a9d9d78c61d982fef61377303d11a650a267bb2f..04b4b76f20e9e76c9a1846144157a43939a06b91 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2004 Hiroyuki Yamamoto
+ * Copyright (C) 1999-2007 Hiroyuki Yamamoto and the Claws Mail team
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #include "defs.h"
 
 #include <glib.h>
+#include <glib/gi18n.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
 
-#include "intl.h"
 #include "main.h"
 #include "utils.h"
 #include "procmsg.h"
 #include "hooks.h"
 #include "msgcache.h"
 #include "partial_download.h"
-
-GHashTable *procmsg_msg_hash_table_create(GSList *mlist)
-{
-       GHashTable *msg_table;
-
-       if (mlist == NULL) return NULL;
-
-       msg_table = g_hash_table_new(NULL, g_direct_equal);
-       procmsg_msg_hash_table_append(msg_table, mlist);
-
-       return msg_table;
-}
-
-void procmsg_msg_hash_table_append(GHashTable *msg_table, GSList *mlist)
-{
-       GSList *cur;
-       MsgInfo *msginfo;
-
-       if (msg_table == NULL || mlist == NULL) return;
-
-       for (cur = mlist; cur != NULL; cur = cur->next) {
-               msginfo = (MsgInfo *)cur->data;
-
-               g_hash_table_insert(msg_table,
-                                   GUINT_TO_POINTER(msginfo->msgnum),
-                                   msginfo);
-       }
-}
-
-GHashTable *procmsg_to_folder_hash_table_create(GSList *mlist)
-{
-       GHashTable *msg_table;
-       GSList *cur;
-       MsgInfo *msginfo;
-
-       if (mlist == NULL) return NULL;
-
-       msg_table = g_hash_table_new(NULL, g_direct_equal);
-
-       for (cur = mlist; cur != NULL; cur = cur->next) {
-               msginfo = (MsgInfo *)cur->data;
-               g_hash_table_insert(msg_table, msginfo->to_folder, msginfo);
-       }
-
-       return msg_table;
-}
-
-gint procmsg_get_last_num_in_msg_list(GSList *mlist)
+#include "mainwindow.h"
+#include "summaryview.h"
+#include "log.h"
+#include "timing.h"
+#include "inc.h"
+
+static gint procmsg_send_message_queue_full(const gchar *file, gboolean keep_session, gchar **errstr,
+                                           FolderItem *queue, gint msgnum, gboolean *queued_removed);
+static void procmsg_update_unread_children     (MsgInfo        *info,
+                                        gboolean        newly_marked);
+enum
 {
-       GSList *cur;
-       MsgInfo *msginfo;
-       gint last = 0;
-
-       for (cur = mlist; cur != NULL; cur = cur->next) {
-               msginfo = (MsgInfo *)cur->data;
-               if (msginfo && msginfo->msgnum > last)
-                       last = msginfo->msgnum;
-       }
-
-       return last;
-}
+       Q_SENDER           = 0,
+       Q_SMTPSERVER       = 1,
+       Q_RECIPIENTS       = 2,
+       Q_NEWSGROUPS       = 3,
+       Q_MAIL_ACCOUNT_ID  = 4,
+       Q_NEWS_ACCOUNT_ID  = 5,
+       Q_SAVE_COPY_FOLDER = 6,
+       Q_REPLY_MESSAGE_ID = 7,
+       Q_FWD_MESSAGE_ID   = 8,
+       Q_PRIVACY_SYSTEM   = 9,
+       Q_ENCRYPT          = 10,
+       Q_ENCRYPT_DATA     = 11,
+       Q_CLAWS_HDRS       = 12,
+       Q_PRIVACY_SYSTEM_OLD = 13,
+       Q_ENCRYPT_OLD        = 14,
+       Q_ENCRYPT_DATA_OLD   = 15,
+       Q_CLAWS_HDRS_OLD     = 16,
+};
 
 void procmsg_msg_list_free(GSList *mlist)
 {
@@ -220,14 +189,18 @@ GNode *procmsg_get_thread_tree(GSList *mlist)
 {
        GNode *root, *parent, *node, *next;
        GHashTable *msgid_table;
-       GRelation *subject_relation;
+       GRelation *subject_relation = NULL;
        MsgInfo *msginfo;
        const gchar *msgid;
-
+        GSList *reflist;
+       START_TIMING("");
        root = g_node_new(NULL);
        msgid_table = g_hash_table_new(g_str_hash, g_str_equal);
-       subject_relation = g_relation_new(2);
-       g_relation_index(subject_relation, 0, g_str_hash, g_str_equal);
+       
+       if (prefs_common.thread_by_subject) {
+               subject_relation = g_relation_new(2);
+               g_relation_index(subject_relation, 0, g_str_hash, g_str_equal);
+       }
 
        for (; mlist != NULL; mlist = mlist->next) {
                msginfo = (MsgInfo *)mlist->data;
@@ -253,24 +226,36 @@ GNode *procmsg_get_thread_tree(GSList *mlist)
 
        /* complete the unfinished threads */
        for (node = root->children; node != NULL; ) {
-               parent = NULL;
                next = node->next;
                msginfo = (MsgInfo *)node->data;
-               if (msginfo->inreplyto) { 
+               parent = NULL;
+               
+                if (msginfo->inreplyto)
                        parent = g_hash_table_lookup(msgid_table, msginfo->inreplyto);
-                       /* node should not be the parent, and node should not 
-                          be an ancestor of parent (circular reference) */
-                       if (parent && parent != node && 
-                           !g_node_is_ancestor(node, parent)) {
-                               g_node_unlink(node);
-                               g_node_insert_before
-                                       (parent, parent->children, node);
-                       }                               
+
+               /* try looking for the indirect parent */
+               if (!parent && msginfo->references) {
+                       for (reflist = msginfo->references;
+                            reflist != NULL; reflist = reflist->next)
+                               if ((parent = g_hash_table_lookup
+                                       (msgid_table, reflist->data)) != NULL)
+                                       break;
+                }                                        
+              
+               /* node should not be the parent, and node should not
+                  be an ancestor of parent (circular reference) */
+               if (parent && parent != node &&
+                   !g_node_is_ancestor(node, parent)) {
+                       g_node_unlink(node);
+                       g_node_insert_before
+                               (parent, parent->children, node);
                }
+               
                node = next;
        }
 
        if (prefs_common.thread_by_subject) {
+               START_TIMING("thread by subject");
                for (node = root->children; node && node != NULL;) {
                        next = node->next;
                        msginfo = (MsgInfo *) node->data;
@@ -294,47 +279,60 @@ GNode *procmsg_get_thread_tree(GSList *mlist)
 
                        node = next;
                }       
+               END_TIMING();
        }
        
-       g_relation_destroy(subject_relation);
-       g_hash_table_destroy(msgid_table);
+       if (prefs_common.thread_by_subject)
+               g_relation_destroy(subject_relation);
 
+       g_hash_table_destroy(msgid_table);
+       END_TIMING();
        return root;
 }
 
-void procmsg_move_messages(GSList *mlist)
+gint procmsg_move_messages(GSList *mlist)
 {
        GSList *cur, *movelist = NULL;
        MsgInfo *msginfo;
        FolderItem *dest = NULL;
-
-       if (!mlist) return;
+       gint retval = 0;
+       gboolean finished = TRUE;
+       if (!mlist) return 0;
 
        folder_item_update_freeze();
 
+next_folder:
        for (cur = mlist; cur != NULL; cur = cur->next) {
                msginfo = (MsgInfo *)cur->data;
+               if (!msginfo->to_folder) {
+                       continue;
+               } else {
+                       finished = FALSE;
+               }
                if (!dest) {
                        dest = msginfo->to_folder;
-                       movelist = g_slist_append(movelist, msginfo);
+                       movelist = g_slist_prepend(movelist, msginfo);
                } else if (dest == msginfo->to_folder) {
-                       movelist = g_slist_append(movelist, msginfo);
+                       movelist = g_slist_prepend(movelist, msginfo);
                } else {
-                       folder_item_move_msgs(dest, movelist);
-                       g_slist_free(movelist);
-                       movelist = NULL;
-                       dest = msginfo->to_folder;
-                       movelist = g_slist_append(movelist, msginfo);
+                       continue;
                }
                procmsg_msginfo_set_to_folder(msginfo, NULL);
        }
-
        if (movelist) {
-               folder_item_move_msgs(dest, movelist);
+               movelist = g_slist_reverse(movelist);
+               retval |= folder_item_move_msgs(dest, movelist);
                g_slist_free(movelist);
+               movelist = NULL;
+       }
+       if (finished == FALSE) {
+               finished = TRUE;
+               dest = NULL;
+               goto next_folder;
        }
 
        folder_item_update_thaw();
+       return retval;
 }
 
 void procmsg_copy_messages(GSList *mlist)
@@ -342,31 +340,39 @@ void procmsg_copy_messages(GSList *mlist)
        GSList *cur, *copylist = NULL;
        MsgInfo *msginfo;
        FolderItem *dest = NULL;
-
+       gboolean finished = TRUE;
        if (!mlist) return;
 
        folder_item_update_freeze();
 
+next_folder:
        for (cur = mlist; cur != NULL; cur = cur->next) {
                msginfo = (MsgInfo *)cur->data;
+               if (!msginfo->to_folder) {
+                       continue;
+               } else {
+                       finished = FALSE;
+               }
                if (!dest) {
                        dest = msginfo->to_folder;
-                       copylist = g_slist_append(copylist, msginfo);
+                       copylist = g_slist_prepend(copylist, msginfo);
                } else if (dest == msginfo->to_folder) {
-                       copylist = g_slist_append(copylist, msginfo);
+                       copylist = g_slist_prepend(copylist, msginfo);
                } else {
-                       folder_item_copy_msgs(dest, copylist);
-                       g_slist_free(copylist);
-                       copylist = NULL;
-                       dest = msginfo->to_folder;
-                       copylist = g_slist_append(copylist, msginfo);
+                       continue;
                }
                procmsg_msginfo_set_to_folder(msginfo, NULL);
        }
-
        if (copylist) {
+               copylist = g_slist_reverse(copylist);
                folder_item_copy_msgs(dest, copylist);
                g_slist_free(copylist);
+               copylist = NULL;
+       }
+       if (finished == FALSE) {
+               finished = TRUE;
+               dest = NULL;
+               goto next_folder;
        }
 
        folder_item_update_thaw();
@@ -400,6 +406,20 @@ gchar *procmsg_get_message_file(MsgInfo *msginfo)
        return filename;
 }
 
+gchar *procmsg_get_message_file_full(MsgInfo *msginfo, gboolean headers, gboolean body)
+{
+       gchar *filename = NULL;
+
+       g_return_val_if_fail(msginfo != NULL, NULL);
+
+       filename = folder_item_fetch_msg_full(msginfo->folder, msginfo->msgnum,
+                                               headers, body);
+       if (!filename)
+               debug_print("can't fetch message %d\n", msginfo->msgnum);
+
+       return filename;
+}
+
 GSList *procmsg_get_message_file_list(GSList *mlist)
 {
         GSList *file_list = NULL;
@@ -461,7 +481,7 @@ FILE *procmsg_open_message(MsgInfo *msginfo)
                        return NULL;
        }
 
-       if ((fp = fopen(file, "rb")) == NULL) {
+       if ((fp = g_fopen(file, "rb")) == NULL) {
                FILE_OP_ERROR(file, "fopen");
                g_free(file);
                return NULL;
@@ -472,8 +492,24 @@ FILE *procmsg_open_message(MsgInfo *msginfo)
        if (MSG_IS_QUEUED(msginfo->flags) || MSG_IS_DRAFT(msginfo->flags)) {
                gchar buf[BUFFSIZE];
 
-               while (fgets(buf, sizeof(buf), fp) != NULL)
+               while (fgets(buf, sizeof(buf), fp) != NULL) {
+                       /* new way */
+                       if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
+                               strlen("X-Claws-End-Special-Headers:"))) ||
+                           (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
+                               strlen("X-Sylpheed-End-Special-Headers:"))))
+                               break;
+                       /* old way */
                        if (buf[0] == '\r' || buf[0] == '\n') break;
+                       /* from other mailers */
+                       if (!strncmp(buf, "Date: ", 6)
+                       ||  !strncmp(buf, "To: ", 4)
+                       ||  !strncmp(buf, "From: ", 6)
+                       ||  !strncmp(buf, "Subject: ", 9)) {
+                               rewind(fp);
+                               break;
+                       }
+               }
        }
 
        return fp;
@@ -503,6 +539,8 @@ void procmsg_get_filter_keyword(MsgInfo *msginfo, gchar **header, gchar **key,
                                       {"X-Mailing-list:", NULL, TRUE},
                                       {"List-Id:",        NULL, TRUE},
                                       {"X-Sequence:",     NULL, TRUE},
+                                      {"Sender:",         NULL, TRUE},
+                                      {"List-Post:",      NULL, TRUE},
                                       {NULL,              NULL, FALSE}};
        enum
        {
@@ -511,7 +549,9 @@ void procmsg_get_filter_keyword(MsgInfo *msginfo, gchar **header, gchar **key,
                H_X_LIST         = 2,
                H_X_MAILING_LIST = 3,
                H_LIST_ID        = 4,
-               H_X_SEQUENCE     = 5
+               H_X_SEQUENCE     = 5,
+               H_SENDER         = 6,
+               H_LIST_POST      = 7
        };
 
        FILE *fp;
@@ -551,19 +591,26 @@ void procmsg_get_filter_keyword(MsgInfo *msginfo, gchar **header, gchar **key,
                        SET_FILTER_KEY("header \"List-Id\"", H_LIST_ID);
                        extract_list_id_str(*key);
                } else if (hentry[H_X_SEQUENCE].body != NULL) {
-                       guchar *p;
+                       gchar *p;
 
                        SET_FILTER_KEY("X-Sequence", H_X_SEQUENCE);
                        p = *key;
                        while (*p != '\0') {
-                               while (*p != '\0' && !isspace(*p)) p++;
-                               while (isspace(*p)) p++;
-                               if (isdigit(*p)) {
+                               while (*p != '\0' && !g_ascii_isspace(*p)) p++;
+                               while (g_ascii_isspace(*p)) p++;
+                               if (g_ascii_isdigit(*p)) {
                                        *p = '\0';
                                        break;
                                }
                        }
                        g_strstrip(*key);
+               } else if (hentry[H_SENDER].body != NULL) {
+                       SET_FILTER_KEY("header \"Sender\"", H_SENDER);
+               } else if (hentry[H_LIST_POST].body != NULL) {
+                       SET_FILTER_KEY("header \"List-Post\"", H_LIST_POST);
+               } else if (msginfo->to) {
+                       *header = g_strdup("to");
+                       *key = g_strdup(msginfo->to);
                } else if (msginfo->subject) {
                        *header = g_strdup("subject");
                        *key = g_strdup(msginfo->subject);
@@ -581,6 +628,10 @@ void procmsg_get_filter_keyword(MsgInfo *msginfo, gchar **header, gchar **key,
                hentry[H_X_MAILING_LIST].body = NULL;
                g_free(hentry[H_LIST_ID].body);
                hentry[H_LIST_ID].body = NULL;
+               g_free(hentry[H_SENDER].body);
+               hentry[H_SENDER].body = NULL;
+               g_free(hentry[H_LIST_POST].body);
+               hentry[H_LIST_POST].body = NULL;
 
                break;
        case FILTER_BY_FROM:
@@ -600,27 +651,194 @@ void procmsg_get_filter_keyword(MsgInfo *msginfo, gchar **header, gchar **key,
        }
 }
 
-void procmsg_empty_trash(void)
+static void procmsg_empty_trash(FolderItem *trash)
+{
+       GNode *node, *next;
+
+       if (!trash || 
+           (trash->stype != F_TRASH && 
+            !folder_has_parent_of_type(trash, F_TRASH)))
+               return;
+
+       if (trash && trash->total_msgs > 0) {
+               GSList *mlist = folder_item_get_msg_list(trash);
+               GSList *cur;
+               for (cur = mlist ; cur != NULL ; cur = cur->next) {
+                       MsgInfo * msginfo = (MsgInfo *) cur->data;
+                       if (MSG_IS_LOCKED(msginfo->flags)) {
+                               procmsg_msginfo_free(msginfo);
+                               continue;
+                       }
+                       if (msginfo->total_size != 0 && 
+                           msginfo->size != (off_t)msginfo->total_size)
+                               partial_mark_for_delete(msginfo);
+
+                       procmsg_msginfo_free(msginfo);
+               }
+               g_slist_free(mlist);
+               folder_item_remove_all_msg(trash);
+       }
+
+       if (!trash->node || !trash->node->children)
+               return;
+
+       node = trash->node->children;
+       while (node != NULL) {
+               next = node->next;
+               procmsg_empty_trash(FOLDER_ITEM(node->data));
+               node = next;
+       }
+}
+
+void procmsg_empty_all_trash(void)
 {
        FolderItem *trash;
        GList *cur;
 
        for (cur = folder_get_list(); cur != NULL; cur = cur->next) {
-               trash = FOLDER(cur->data)->trash;
-               if (trash && trash->total_msgs > 0) {
-                       GSList *mlist = folder_item_get_msg_list(trash);
-                       GSList *cur;
-                       for (cur = mlist ; cur != NULL ; cur = cur->next) {
-                               MsgInfo * msginfo = (MsgInfo *) cur->data;
-                               partial_mark_for_delete(msginfo);
-                               procmsg_msginfo_free(msginfo);
+               Folder *folder = FOLDER(cur->data);
+               trash = folder->trash;
+               procmsg_empty_trash(trash);
+               if (folder->account && folder->account->set_trash_folder && 
+                   folder_find_item_from_identifier(folder->account->trash_folder))
+                       procmsg_empty_trash(
+                               folder_find_item_from_identifier(folder->account->trash_folder));
+       }
+}
+
+static PrefsAccount *procmsg_get_account_from_file(const gchar *file)
+{
+       PrefsAccount *mailac = NULL;
+       FILE *fp;
+       int hnum;
+       gchar buf[BUFFSIZE];
+       static HeaderEntry qentry[] = {{"S:",    NULL, FALSE},
+                                      {"SSV:",  NULL, FALSE},
+                                      {"R:",    NULL, FALSE},
+                                      {"NG:",   NULL, FALSE},
+                                      {"MAID:", NULL, FALSE},
+                                      {"NAID:", NULL, FALSE},
+                                      {"SCF:",  NULL, FALSE},
+                                      {"RMID:", NULL, FALSE},
+                                      {"FMID:", NULL, FALSE},
+                                      {"X-Claws-Privacy-System:", NULL, FALSE},
+                                      {"X-Claws-Encrypt:", NULL, FALSE},
+                                      {"X-Claws-Encrypt-Data:", NULL, FALSE},
+                                      {"X-Claws-End-Special-Headers",    NULL, FALSE},
+                                      {"X-Sylpheed-Privacy-System:", NULL, FALSE},
+                                      {"X-Sylpheed-Encrypt:", NULL, FALSE},
+                                      {"X-Sylpheed-Encrypt-Data:", NULL, FALSE},
+                                      {NULL,    NULL, FALSE}};
+       
+       g_return_val_if_fail(file != NULL, NULL);
+
+       if ((fp = g_fopen(file, "rb")) == NULL) {
+               FILE_OP_ERROR(file, "fopen");
+               return NULL;
+       }
+
+       while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, qentry))
+              != -1) {
+               gchar *p = buf + strlen(qentry[hnum].name);
+
+               if (hnum == Q_MAIL_ACCOUNT_ID) {
+                       mailac = account_find_from_id(atoi(p));
+                       break;
+               }
+       }
+       fclose(fp);
+       return mailac;
+}
+
+static GSList *procmsg_list_sort_by_account(FolderItem *queue, GSList *list)
+{
+       GSList *result = NULL;
+       GSList *orig = NULL;
+       PrefsAccount *last_account = NULL;
+       MsgInfo *msg = NULL;
+       GSList *cur = NULL;
+       gboolean nothing_to_sort = TRUE;
+
+       if (!list)
+               return NULL;
+
+       orig = g_slist_copy(list);
+       
+       msg = (MsgInfo *)orig->data;
+       
+       for (cur = orig; cur; cur = cur->next)
+               debug_print("sort before %s\n", ((MsgInfo *)cur->data)->from);
+       
+       debug_print("\n");
+
+parse_again:   
+       nothing_to_sort = TRUE;
+       cur = orig;
+       while (cur) {
+               gchar *file = NULL;
+               PrefsAccount *ac = NULL;
+               msg = (MsgInfo *)cur->data;
+               file = folder_item_fetch_msg(queue, msg->msgnum);
+               ac = procmsg_get_account_from_file(file);
+               g_free(file);
+
+               if (last_account == NULL || (ac != NULL && ac == last_account)) {
+                       result = g_slist_append(result, msg);
+                       orig = g_slist_remove(orig, msg);
+                       last_account = ac;
+                       nothing_to_sort = FALSE;
+                       goto parse_again;
+               }
+               cur = cur->next;
+       }
+       
+       if (orig || g_slist_length(orig)) {
+               if (!last_account && nothing_to_sort) {
+                       /* can't find an account for the rest of the list */
+                       cur = orig;
+                       while (cur) {
+                               result = g_slist_append(result, cur->data);
+                               cur = cur->next;
                        }
+               } else {
+                       last_account = NULL;
+                       goto parse_again;
+               }
+       }
+       
+       g_slist_free(orig);
+       
+       for (cur = result; cur; cur = cur->next)
+               debug_print("sort after  %s\n", ((MsgInfo *)cur->data)->from);
 
-                       folder_item_remove_all_msg(trash);
+       debug_print("\n");
+
+       return result;
+}
+
+static gboolean procmsg_is_last_for_account(FolderItem *queue, MsgInfo *msginfo, GSList *elem)
+{
+       gchar *file = folder_item_fetch_msg(queue, msginfo->msgnum);
+       PrefsAccount *ac = procmsg_get_account_from_file(file);
+       GSList *cur = elem;
+       g_free(file);
+       for (cur = elem; cur; cur = cur->next) {
+               MsgInfo *cur_msginfo = (MsgInfo *)cur->data;
+               file = folder_item_fetch_msg(queue, cur_msginfo->msgnum);
+               
+               if (cur_msginfo != msginfo && !MSG_IS_LOCKED(cur_msginfo->flags)) {
+                       if (procmsg_get_account_from_file(file) == ac) {
+                               g_free(file);
+                               return FALSE;
+                       }
                }
+               
+               g_free(file);
        }
+       return TRUE;
 }
 
+static gboolean send_queue_lock = FALSE;
 /*!
  *\brief       Send messages in queue
  *
@@ -630,43 +848,61 @@ void procmsg_empty_trash(void)
  *\return      Number of messages sent, negative if an error occurred
  *             positive if no error occurred
  */
-gint procmsg_send_queue(FolderItem *queue, gboolean save_msgs)
+gint procmsg_send_queue(FolderItem *queue, gboolean save_msgs, gchar **errstr)
 {
-       gint ret = 1, count = 0;
+       gint sent = 0, err = 0;
        GSList *list, *elem;
-
+       GSList *sorted_list = NULL;
+       GNode *node, *next;
+       
+       if (send_queue_lock) {
+               /* Avoid having to translate two similar strings */
+               log_warning(LOG_PROTOCOL, "%s\n", _("Already trying to send."));
+               if (errstr) {
+                       if (*errstr) g_free(*errstr);
+                       *errstr = g_strdup_printf(_("Already trying to send."));
+               }
+               toolbar_main_set_sensitive(mainwindow_get_mainwindow());
+               return -1;
+       }
+       send_queue_lock = TRUE;
+       inc_lock();
        if (!queue)
                queue = folder_get_default_queue();
-       g_return_val_if_fail(queue != NULL, -1);
+       
+       if (queue == NULL) {
+               send_queue_lock = FALSE;
+               inc_unlock();
+               return -1;
+       }
+
+       toolbar_main_set_sensitive(mainwindow_get_mainwindow());
 
        folder_item_scan(queue);
        list = folder_item_get_msg_list(queue);
 
-       for (elem = list; elem != NULL; elem = elem->next) {
+       /* sort the list per sender account; this helps reusing the same SMTP server */
+       sorted_list = procmsg_list_sort_by_account(queue, list);
+       
+       for (elem = sorted_list; elem != NULL; elem = elem->next) {
                gchar *file;
                MsgInfo *msginfo;
-               
+                       
                msginfo = (MsgInfo *)(elem->data);
                if (!MSG_IS_LOCKED(msginfo->flags)) {
                        file = folder_item_fetch_msg(queue, msginfo->msgnum);
                        if (file) {
-                               if (procmsg_send_message_queue(file) < 0) {
+                               gboolean queued_removed = FALSE;
+                               if (procmsg_send_message_queue_full(file, 
+                                               !procmsg_is_last_for_account(queue, msginfo, elem),
+                                               errstr, queue, msginfo->msgnum, &queued_removed) < 0) {
                                        g_warning("Sending queued message %d failed.\n", 
                                                  msginfo->msgnum);
-                                       ret = -1;
+                                       err++;
                                } else {
-                                       /* CLAWS: 
-                                        * We save in procmsg_send_message_queue because
-                                        * we need the destination folder from the queue
-                                        * header
-                                                       
-                                       if (save_msgs)
-                                               procmsg_save_to_outbox
-                                                       (queue->folder->outbox,
-                                                        file, TRUE);
-                                        */
-                                       count++; 
-                                       folder_item_remove_msg(queue, msginfo->msgnum);
+                                       sent++; 
+                                       if (!queued_removed)
+                                               folder_item_remove_msg(queue, msginfo->msgnum);
                                }
                                g_free(file);
                        }
@@ -677,7 +913,69 @@ gint procmsg_send_queue(FolderItem *queue, gboolean save_msgs)
                procmsg_msginfo_free(msginfo);
        }
 
-       return ret * count;
+       g_slist_free(sorted_list);
+       folder_item_scan(queue);
+
+       if (queue->node && queue->node->children) {
+               node = queue->node->children;
+               while (node != NULL) {
+                       int res = 0;
+                       next = node->next;
+                       send_queue_lock = FALSE;
+                       res = procmsg_send_queue(FOLDER_ITEM(node->data), save_msgs, errstr);
+                       send_queue_lock = TRUE;
+                       if (res < 0) 
+                               err = -res;
+                       else
+                               sent += res;
+                       node = next;
+               }
+       }
+       send_queue_lock = FALSE;
+       inc_unlock();
+       toolbar_main_set_sensitive(mainwindow_get_mainwindow());
+
+       return (err != 0 ? -err : sent);
+}
+
+gboolean procmsg_is_sending(void)
+{
+       return send_queue_lock;
+}
+
+/*!
+ *\brief       Determine if a queue folder is empty
+ *
+ *\param       queue Queue folder to process
+ *
+ *\return      TRUE if the queue folder is empty, otherwise return FALSE
+ */
+gboolean procmsg_queue_is_empty(FolderItem *queue)
+{
+       GSList *list;
+       gboolean res = FALSE;
+       if (!queue)
+               queue = folder_get_default_queue();
+       g_return_val_if_fail(queue != NULL, TRUE);
+
+       folder_item_scan(queue);
+       list = folder_item_get_msg_list(queue);
+       res = (list == NULL);
+       procmsg_msg_list_free(list);
+
+       if (res == TRUE) {
+               GNode *node, *next;
+               if (queue->node && queue->node->children) {
+                       node = queue->node->children;
+                       while (node != NULL) {
+                               next = node->next;
+                               if (!procmsg_queue_is_empty(FOLDER_ITEM(node->data)))
+                                       return FALSE;
+                               node = next;
+                       }
+               }
+       }
+       return res;
 }
 
 gint procmsg_remove_special_headers(const gchar *in, const gchar *out)
@@ -685,25 +983,41 @@ gint procmsg_remove_special_headers(const gchar *in, const gchar *out)
        FILE *fp, *outfp;
        gchar buf[BUFFSIZE];
        
-       if ((fp = fopen(in, "rb")) == NULL) {
+       if ((fp = g_fopen(in, "rb")) == NULL) {
                FILE_OP_ERROR(in, "fopen");
                return -1;
        }
-       if ((outfp = fopen(out, "wb")) == NULL) {
+       if ((outfp = g_fopen(out, "wb")) == NULL) {
                FILE_OP_ERROR(out, "fopen");
                fclose(fp);
                return -1;
        }
-       while (fgets(buf, sizeof(buf), fp) != NULL)
+       while (fgets(buf, sizeof(buf), fp) != NULL) {
+               /* new way */
+               if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
+                       strlen("X-Claws-End-Special-Headers:"))) ||
+                   (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
+                       strlen("X-Sylpheed-End-Special-Headers:"))))
+                       break;
+               /* old way */
                if (buf[0] == '\r' || buf[0] == '\n') break;
+               /* from other mailers */
+               if (!strncmp(buf, "Date: ", 6)
+               ||  !strncmp(buf, "To: ", 4)
+               ||  !strncmp(buf, "From: ", 6)
+               ||  !strncmp(buf, "Subject: ", 9)) {
+                       rewind(fp);
+                       break;
+               }
+       }
        while (fgets(buf, sizeof(buf), fp) != NULL)
                fputs(buf, outfp);
        fclose(outfp);
        fclose(fp);
        return 0;
-
 }
-gint procmsg_save_to_outbox(FolderItem *outbox, const gchar *file,
+
+static gint procmsg_save_to_outbox(FolderItem *outbox, const gchar *file,
                            gboolean is_queued)
 {
        gint num;
@@ -721,7 +1035,7 @@ gint procmsg_save_to_outbox(FolderItem *outbox, const gchar *file,
                gchar tmp[MAXPATHLEN + 1];
 
                g_snprintf(tmp, sizeof(tmp), "%s%ctmpmsg.out.%08x",
-                          get_rc_dir(), G_DIR_SEPARATOR, (guint)random());
+                          get_rc_dir(), G_DIR_SEPARATOR, (guint) rand());
                
                if (procmsg_remove_special_headers(file, tmp) !=0)
                        return -1;
@@ -729,7 +1043,7 @@ gint procmsg_save_to_outbox(FolderItem *outbox, const gchar *file,
                folder_item_scan(outbox);
                if ((num = folder_item_add_msg(outbox, tmp, &flag, TRUE)) < 0) {
                        g_warning("can't save message\n");
-                       unlink(tmp);
+                       g_unlink(tmp);
                        return -1;
                }
        } else {
@@ -739,7 +1053,6 @@ gint procmsg_save_to_outbox(FolderItem *outbox, const gchar *file,
                        g_warning("can't save message\n");
                        return -1;
                }
-               return -1;
        }
        msginfo = folder_item_get_msginfo(outbox, num);         /* refcnt++ */
        tmp_msginfo = procmsg_msginfo_get_full_info(msginfo);   /* refcnt++ */ 
@@ -747,11 +1060,12 @@ gint procmsg_save_to_outbox(FolderItem *outbox, const gchar *file,
                procmsg_msginfo_unset_flags(msginfo, ~0, 0);
                procmsg_msginfo_free(msginfo);                  /* refcnt-- */
                /* tmp_msginfo == msginfo */
-               if (tmp_msginfo && (msginfo->dispositionnotificationto || 
-                   msginfo->returnreceiptto)) {
+               if (tmp_msginfo && msginfo->extradata && 
+                   (msginfo->extradata->dispositionnotificationto || 
+                    msginfo->extradata->returnreceiptto)) {
                        procmsg_msginfo_set_flags(msginfo, MSG_RETRCPT_SENT, 0); 
-                       procmsg_msginfo_free(msginfo);          /* refcnt-- */
                }       
+               procmsg_msginfo_free(tmp_msginfo);              /* refcnt-- */
        }
 
        return 0;
@@ -768,7 +1082,11 @@ void procmsg_print_message(MsgInfo *msginfo, const gchar *cmdline)
 
        g_return_if_fail(msginfo);
 
-       if ((tmpfp = procmime_get_first_text_content(msginfo)) == NULL) {
+       if (procmime_msginfo_is_encrypted(msginfo))
+               tmpfp = procmime_get_first_encrypted_text_content(msginfo);
+       else
+               tmpfp = procmime_get_first_text_content(msginfo);
+       if (tmpfp == NULL) {
                g_warning("Can't get text part\n");
                return;
        }
@@ -776,7 +1094,7 @@ void procmsg_print_message(MsgInfo *msginfo, const gchar *cmdline)
        prtmp = g_strdup_printf("%s%cprinttmp.%08x",
                                get_mime_tmp_dir(), G_DIR_SEPARATOR, id++);
 
-       if ((prfp = fopen(prtmp, "wb")) == NULL) {
+       if ((prfp = g_fopen(prtmp, "wb")) == NULL) {
                FILE_OP_ERROR(prtmp, "fopen");
                g_free(prtmp);
                fclose(tmpfp);
@@ -803,7 +1121,7 @@ void procmsg_print_message(MsgInfo *msginfo, const gchar *cmdline)
                g_snprintf(buf, sizeof(buf) - 1, cmdline, prtmp);
        else {
                if (cmdline)
-                       g_warning("Print command line is invalid: `%s'\n",
+                       g_warning("Print command line is invalid: '%s'\n",
                                  cmdline);
                g_snprintf(buf, sizeof(buf) - 1, def_cmd, prtmp);
        }
@@ -835,6 +1153,7 @@ MsgInfo *procmsg_msginfo_new(void)
 MsgInfo *procmsg_msginfo_copy(MsgInfo *msginfo)
 {
        MsgInfo *newmsginfo;
+        GSList *refs;
 
        if (msginfo == NULL) return NULL;
 
@@ -868,13 +1187,31 @@ MsgInfo *procmsg_msginfo_copy(MsgInfo *msginfo)
        MEMBCOPY(folder);
        MEMBCOPY(to_folder);
 
-       MEMBDUP(xface);
-       MEMBDUP(dispositionnotificationto);
-       MEMBDUP(returnreceiptto);
-       MEMBDUP(references);
+       if (msginfo->extradata) {
+               newmsginfo->extradata = g_new0(MsgInfoExtraData, 1);
+               MEMBDUP(extradata->face);
+               MEMBDUP(extradata->xface);
+               MEMBDUP(extradata->dispositionnotificationto);
+               MEMBDUP(extradata->returnreceiptto);
+               MEMBDUP(extradata->partial_recv);
+               MEMBDUP(extradata->account_server);
+               MEMBDUP(extradata->account_login);
+               MEMBDUP(extradata->list_post);
+               MEMBDUP(extradata->list_subscribe);
+               MEMBDUP(extradata->list_unsubscribe);
+               MEMBDUP(extradata->list_help);
+               MEMBDUP(extradata->list_archive);
+               MEMBDUP(extradata->list_owner);
+       }
+
+        refs = msginfo->references;
+        for (refs = msginfo->references; refs != NULL; refs = refs->next) {
+                newmsginfo->references = g_slist_prepend
+                        (newmsginfo->references, g_strdup(refs->data)); 
+        }
+        newmsginfo->references = g_slist_reverse(newmsginfo->references);
 
        MEMBCOPY(score);
-       MEMBCOPY(threadscore);
        MEMBDUP(plaintext_file);
 
        return newmsginfo;
@@ -887,8 +1224,12 @@ MsgInfo *procmsg_msginfo_get_full_info(MsgInfo *msginfo)
 
        if (msginfo == NULL) return NULL;
 
-       file = procmsg_get_message_file(msginfo);
-       if (!file) {
+       file = procmsg_get_message_file_path(msginfo);
+       if (!file || !is_file_exist(file)) {
+               g_free(file);
+               file = procmsg_get_message_file(msginfo);
+       }
+       if (!file || !is_file_exist(file)) {
                g_warning("procmsg_msginfo_get_full_info(): can't get message file.\n");
                return NULL;
        }
@@ -897,27 +1238,44 @@ MsgInfo *procmsg_msginfo_get_full_info(MsgInfo *msginfo)
        g_free(file);
        if (!full_msginfo) return NULL;
 
-       /* CLAWS: make sure we add the missing members; see: 
-        * procheader.c::procheader_get_headernames() */
-       if (!msginfo->xface)
-               msginfo->xface = g_strdup(full_msginfo->xface);
-       if (!msginfo->dispositionnotificationto)
-               msginfo->dispositionnotificationto = 
-                       g_strdup(full_msginfo->dispositionnotificationto);
-       if (!msginfo->returnreceiptto)
-               msginfo->returnreceiptto = g_strdup
-                       (full_msginfo->returnreceiptto);
-       if (!msginfo->partial_recv && full_msginfo->partial_recv)
-               msginfo->partial_recv = g_strdup
-                       (full_msginfo->partial_recv);
        msginfo->total_size = full_msginfo->total_size;
-       if (!msginfo->account_server && full_msginfo->account_server)
-               msginfo->account_server = g_strdup
-                       (full_msginfo->account_server);
-       if (!msginfo->account_login && full_msginfo->account_login)
-               msginfo->account_login = g_strdup
-                       (full_msginfo->account_login);
        msginfo->planned_download = full_msginfo->planned_download;
+
+       if (full_msginfo->extradata) {
+               if (!msginfo->extradata)
+                       msginfo->extradata = g_new0(MsgInfoExtraData, 1);
+               if (!msginfo->extradata->list_post)
+                       msginfo->extradata->list_post = g_strdup(full_msginfo->extradata->list_post);
+               if (!msginfo->extradata->list_subscribe)
+                       msginfo->extradata->list_subscribe = g_strdup(full_msginfo->extradata->list_subscribe);
+               if (!msginfo->extradata->list_unsubscribe)
+                       msginfo->extradata->list_unsubscribe = g_strdup(full_msginfo->extradata->list_unsubscribe);
+               if (!msginfo->extradata->list_help)
+                       msginfo->extradata->list_help = g_strdup(full_msginfo->extradata->list_help);
+               if (!msginfo->extradata->list_archive)
+                       msginfo->extradata->list_archive= g_strdup(full_msginfo->extradata->list_archive);
+               if (!msginfo->extradata->list_owner)
+                       msginfo->extradata->list_owner = g_strdup(full_msginfo->extradata->list_owner);
+               if (!msginfo->extradata->xface)
+                       msginfo->extradata->xface = g_strdup(full_msginfo->extradata->xface);
+               if (!msginfo->extradata->face)
+                       msginfo->extradata->face = g_strdup(full_msginfo->extradata->face);
+               if (!msginfo->extradata->dispositionnotificationto)
+                       msginfo->extradata->dispositionnotificationto = 
+                               g_strdup(full_msginfo->extradata->dispositionnotificationto);
+               if (!msginfo->extradata->returnreceiptto)
+                       msginfo->extradata->returnreceiptto = g_strdup
+                               (full_msginfo->extradata->returnreceiptto);
+               if (!msginfo->extradata->partial_recv && full_msginfo->extradata->partial_recv)
+                       msginfo->extradata->partial_recv = g_strdup
+                               (full_msginfo->extradata->partial_recv);
+               if (!msginfo->extradata->account_server && full_msginfo->extradata->account_server)
+                       msginfo->extradata->account_server = g_strdup
+                               (full_msginfo->extradata->account_server);
+               if (!msginfo->extradata->account_login && full_msginfo->extradata->account_login)
+                       msginfo->extradata->account_login = g_strdup
+                               (full_msginfo->extradata->account_login);
+       }
        procmsg_msginfo_free(full_msginfo);
 
        return procmsg_msginfo_new_ref(msginfo);
@@ -937,10 +1295,6 @@ void procmsg_msginfo_free(MsgInfo *msginfo)
        }
 
        g_free(msginfo->fromspace);
-       g_free(msginfo->references);
-       g_free(msginfo->returnreceiptto);
-       g_free(msginfo->dispositionnotificationto);
-       g_free(msginfo->xface);
 
        g_free(msginfo->fromname);
 
@@ -954,10 +1308,25 @@ void procmsg_msginfo_free(MsgInfo *msginfo)
        g_free(msginfo->inreplyto);
        g_free(msginfo->xref);
 
-       g_free(msginfo->partial_recv);
-       g_free(msginfo->account_server);
-       g_free(msginfo->account_login);
-       
+       if (msginfo->extradata) {
+               g_free(msginfo->extradata->returnreceiptto);
+               g_free(msginfo->extradata->dispositionnotificationto);
+               g_free(msginfo->extradata->xface);
+               g_free(msginfo->extradata->face);
+               g_free(msginfo->extradata->list_post);
+               g_free(msginfo->extradata->list_subscribe);
+               g_free(msginfo->extradata->list_unsubscribe);
+               g_free(msginfo->extradata->list_help);
+               g_free(msginfo->extradata->list_archive);
+               g_free(msginfo->extradata->list_owner);
+               g_free(msginfo->extradata->partial_recv);
+               g_free(msginfo->extradata->account_server);
+               g_free(msginfo->extradata->account_login);
+               g_free(msginfo->extradata);
+       }
+       slist_free_strings(msginfo->references);
+       g_slist_free(msginfo->references);
+
        g_free(msginfo->plaintext_file);
 
        g_free(msginfo);
@@ -966,6 +1335,7 @@ void procmsg_msginfo_free(MsgInfo *msginfo)
 guint procmsg_msginfo_memusage(MsgInfo *msginfo)
 {
        guint memusage = 0;
+       GSList *refs;
        
        memusage += sizeof(MsgInfo);
        if (msginfo->fromname)
@@ -986,47 +1356,49 @@ guint procmsg_msginfo_memusage(MsgInfo *msginfo)
                memusage += strlen(msginfo->msgid);
        if (msginfo->inreplyto)
                memusage += strlen(msginfo->inreplyto);
-       if (msginfo->xface)
-               memusage += strlen(msginfo->xface);
-       if (msginfo->dispositionnotificationto)
-               memusage += strlen(msginfo->dispositionnotificationto);
-       if (msginfo->returnreceiptto)
-               memusage += strlen(msginfo->returnreceiptto);
-       if (msginfo->references)
-               memusage += strlen(msginfo->references);
+       for (refs = msginfo->references; refs; refs=refs->next) {
+               gchar *r = (gchar *)refs->data;
+               memusage += r?strlen(r):0;
+       }
        if (msginfo->fromspace)
                memusage += strlen(msginfo->fromspace);
 
+       if (msginfo->extradata) {
+               memusage += sizeof(MsgInfoExtraData);
+               if (msginfo->extradata->xface)
+                       memusage += strlen(msginfo->extradata->xface);
+               if (msginfo->extradata->face)
+                       memusage += strlen(msginfo->extradata->face);
+               if (msginfo->extradata->dispositionnotificationto)
+                       memusage += strlen(msginfo->extradata->dispositionnotificationto);
+               if (msginfo->extradata->returnreceiptto)
+                       memusage += strlen(msginfo->extradata->returnreceiptto);
+
+               if (msginfo->extradata->partial_recv)
+                       memusage += strlen(msginfo->extradata->partial_recv);
+               if (msginfo->extradata->account_server)
+                       memusage += strlen(msginfo->extradata->account_server);
+               if (msginfo->extradata->account_login)
+                       memusage += strlen(msginfo->extradata->account_login);
+
+               if (msginfo->extradata->list_post)
+                       memusage += strlen(msginfo->extradata->list_post);
+               if (msginfo->extradata->list_subscribe)
+                       memusage += strlen(msginfo->extradata->list_subscribe);
+               if (msginfo->extradata->list_unsubscribe)
+                       memusage += strlen(msginfo->extradata->list_unsubscribe);
+               if (msginfo->extradata->list_help)
+                       memusage += strlen(msginfo->extradata->list_help);
+               if (msginfo->extradata->list_archive)
+                       memusage += strlen(msginfo->extradata->list_archive);
+               if (msginfo->extradata->list_owner)
+                       memusage += strlen(msginfo->extradata->list_owner);
+       }
        return memusage;
 }
 
-gint procmsg_cmp_msgnum_for_sort(gconstpointer a, gconstpointer b)
-{
-       const MsgInfo *msginfo1 = a;
-       const MsgInfo *msginfo2 = b;
-
-       if (!msginfo1)
-               return -1;
-       if (!msginfo2)
-               return -1;
-
-       return msginfo1->msgnum - msginfo2->msgnum;
-}
-
-enum
-{
-       Q_SENDER           = 0,
-       Q_SMTPSERVER       = 1,
-       Q_RECIPIENTS       = 2,
-       Q_NEWSGROUPS       = 3,
-       Q_MAIL_ACCOUNT_ID  = 4,
-       Q_NEWS_ACCOUNT_ID  = 5,
-       Q_SAVE_COPY_FOLDER = 6,
-       Q_REPLY_MESSAGE_ID = 7,
-       Q_FWD_MESSAGE_ID   = 8
-};
-
-gint procmsg_send_message_queue(const gchar *file)
+static gint procmsg_send_message_queue_full(const gchar *file, gboolean keep_session, gchar **errstr,
+                                           FolderItem *queue, gint msgnum, gboolean *queued_removed)
 {
        static HeaderEntry qentry[] = {{"S:",    NULL, FALSE},
                                       {"SSV:",  NULL, FALSE},
@@ -1037,6 +1409,14 @@ gint procmsg_send_message_queue(const gchar *file)
                                       {"SCF:",  NULL, FALSE},
                                       {"RMID:", NULL, FALSE},
                                       {"FMID:", NULL, FALSE},
+                                      {"X-Claws-Privacy-System:", NULL, FALSE},
+                                      {"X-Claws-Encrypt:", NULL, FALSE},
+                                      {"X-Claws-Encrypt-Data:", NULL, FALSE},
+                                      {"X-Claws-End-Special-Headers:", NULL, FALSE},
+                                      {"X-Sylpheed-Privacy-System:", NULL, FALSE},
+                                      {"X-Sylpheed-Encrypt:", NULL, FALSE},
+                                      {"X-Sylpheed-Encrypt-Data:", NULL, FALSE},
+                                      {"X-Sylpheed-End-Special-Headers:", NULL, FALSE},
                                       {NULL,    NULL, FALSE}};
        FILE *fp;
        gint filepos;
@@ -1048,15 +1428,25 @@ gint procmsg_send_message_queue(const gchar *file)
        gchar *savecopyfolder = NULL;
        gchar *replymessageid = NULL;
        gchar *fwdmessageid = NULL;
+       gchar *privacy_system = NULL;
+       gboolean encrypt = FALSE;
+       gchar *encrypt_data = NULL;
        gchar buf[BUFFSIZE];
        gint hnum;
        PrefsAccount *mailac = NULL, *newsac = NULL;
+       gboolean save_clear_text = TRUE;
+       gchar *tmp_enc_file = NULL;
+
        int local = 0;
 
        g_return_val_if_fail(file != NULL, -1);
 
-       if ((fp = fopen(file, "rb")) == NULL) {
+       if ((fp = g_fopen(file, "rb")) == NULL) {
                FILE_OP_ERROR(file, "fopen");
+               if (errstr) {
+                       if (*errstr) g_free(*errstr);
+                       *errstr = g_strdup_printf(_("Couldn't open file %s."), file);
+               }
                return -1;
        }
 
@@ -1066,10 +1456,12 @@ gint procmsg_send_message_queue(const gchar *file)
 
                switch (hnum) {
                case Q_SENDER:
-                       if (!from) from = g_strdup(p);
+                       if (from == NULL) 
+                               from = g_strdup(p);
                        break;
                case Q_SMTPSERVER:
-                       if (!smtpserver) smtpserver = g_strdup(p);
+                       if (smtpserver == NULL) 
+                               smtpserver = g_strdup(p);
                        break;
                case Q_RECIPIENTS:
                        to_list = address_list_append(to_list, p);
@@ -1084,22 +1476,108 @@ gint procmsg_send_message_queue(const gchar *file)
                        newsac = account_find_from_id(atoi(p));
                        break;
                case Q_SAVE_COPY_FOLDER:
-                       if (!savecopyfolder) savecopyfolder = g_strdup(p);
+                       if (savecopyfolder == NULL) 
+                               savecopyfolder = g_strdup(p);
                        break;
                case Q_REPLY_MESSAGE_ID:
-                       if (!replymessageid) replymessageid = g_strdup(p);
+                       if (replymessageid == NULL) 
+                               replymessageid = g_strdup(p);
                        break;
                case Q_FWD_MESSAGE_ID:
-                       if (!fwdmessageid) fwdmessageid = g_strdup(p);
+                       if (fwdmessageid == NULL) 
+                               fwdmessageid = g_strdup(p);
+                       break;
+               case Q_PRIVACY_SYSTEM:
+               case Q_PRIVACY_SYSTEM_OLD:
+                       if (privacy_system == NULL) 
+                               privacy_system = g_strdup(p);
                        break;
+               case Q_ENCRYPT:
+               case Q_ENCRYPT_OLD:
+                       if (p[0] == '1') 
+                               encrypt = TRUE;
+                       break;
+               case Q_ENCRYPT_DATA:
+               case Q_ENCRYPT_DATA_OLD:
+                       if (encrypt_data == NULL) 
+                               encrypt_data = g_strdup(p);
+                       break;
+               case Q_CLAWS_HDRS:
+               case Q_CLAWS_HDRS_OLD:
+                       /* end of special headers reached */
+                       goto send_mail; /* can't "break;break;" */
                }
        }
+send_mail:
        filepos = ftell(fp);
 
+       if (encrypt) {
+               MimeInfo *mimeinfo;
+
+               if (mailac && mailac->save_encrypted_as_clear_text 
+               &&  !mailac->encrypt_to_self)
+                       save_clear_text = TRUE;
+               else
+                       save_clear_text = FALSE;
+
+               fclose(fp);
+               fp = NULL;
+
+               mimeinfo = procmime_scan_queue_file(file);
+               if (!privacy_encrypt(privacy_system, mimeinfo, encrypt_data)
+               || (fp = my_tmpfile()) == NULL
+               ||  procmime_write_mimeinfo(mimeinfo, fp) < 0) {
+                       if (fp)
+                               fclose(fp);
+                       procmime_mimeinfo_free_all(mimeinfo);
+                       g_free(from);
+                       g_free(smtpserver);
+                       slist_free_strings(to_list);
+                       g_slist_free(to_list);
+                       slist_free_strings(newsgroup_list);
+                       g_slist_free(newsgroup_list);
+                       g_free(savecopyfolder);
+                       g_free(replymessageid);
+                       g_free(fwdmessageid);
+                       g_free(privacy_system);
+                       g_free(encrypt_data);
+                       if (errstr) {
+                               if (*errstr) g_free(*errstr);
+                               *errstr = g_strdup_printf(_("Couldn't encrypt the email: %s"),
+                                               privacy_get_error());
+                       }
+                       return -1;
+               }
+               
+               rewind(fp);
+               if (!save_clear_text) {
+                       gchar *content = NULL;
+                       FILE *tmpfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmp_enc_file);
+                       if (tmpfp) {
+                               fclose(tmpfp);
+
+                               content = file_read_stream_to_str(fp);
+                               rewind(fp);
+
+                               str_write_to_file(content, tmp_enc_file);
+                               g_free(content);
+                       } else {
+                               g_warning("couldn't get tempfile\n");
+                       }
+               } 
+               
+               procmime_mimeinfo_free_all(mimeinfo);
+               
+               filepos = 0;
+       }
+
        if (to_list) {
                debug_print("Sending message by mail\n");
                if (!from) {
-                       g_warning("Queued message header is broken.\n");
+                       if (errstr) {
+                               if (*errstr) g_free(*errstr);
+                               *errstr = g_strdup_printf(_("Queued message header is broken."));
+                       }
                        mailval = -1;
                } else if (mailac && mailac->use_mail_command &&
                           mailac->mail_command && (* mailac->mail_command)) {
@@ -1115,9 +1593,13 @@ gint procmsg_send_message_queue(const gchar *file)
                                }
                        }
 
-                       if (mailac)
-                               mailval = send_message_smtp(mailac, to_list, fp);
-                       else {
+                       if (mailac) {
+                               mailval = send_message_smtp_full(mailac, to_list, fp, keep_session);
+                               if (mailval == -1 && errstr) {
+                                       if (*errstr) g_free(*errstr);
+                                       *errstr = g_strdup_printf(_("An error happened during SMTP session."));
+                               }
+                       } else {
                                PrefsAccount tmp_ac;
 
                                g_warning("Account not found.\n");
@@ -1127,23 +1609,35 @@ gint procmsg_send_message_queue(const gchar *file)
                                tmp_ac.smtp_server = smtpserver;
                                tmp_ac.smtpport = SMTP_PORT;
                                mailval = send_message_smtp(&tmp_ac, to_list, fp);
+                               if (mailval == -1 && errstr) {
+                                       if (*errstr) g_free(*errstr);
+                                       *errstr = g_strdup_printf(_("No specific account has been found to "
+                                                       "send, and an error happened during SMTP session."));
+                               }
                        }
                }
+       } else if (!to_list && !newsgroup_list) {
+               if (errstr) {
+                       if (*errstr) g_free(*errstr);
+                       *errstr = g_strdup(_("Couldn't determine sending informations. "
+                               "Maybe the email hasn't been generated by Claws Mail."));
+               }
+               mailval = -1;
        }
 
        fseek(fp, filepos, SEEK_SET);
-       if (newsgroup_list && (newsval == 0)) {
+       if (newsgroup_list && (mailval == 0)) {
                Folder *folder;
                gchar *tmp = NULL;
                FILE *tmpfp;
 
                /* write to temporary file */
-               tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
-                           G_DIR_SEPARATOR, (gint)file);
-               if ((tmpfp = fopen(tmp, "wb")) == NULL) {
+               tmp = g_strdup_printf("%s%ctmp%p", g_get_tmp_dir(),
+                           G_DIR_SEPARATOR, file);
+               if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
                        FILE_OP_ERROR(tmp, "fopen");
                        newsval = -1;
-                       alertpanel_error(_("Could not create temporary file for news sending."));
+                       alertpanel_error(_("Couldn't create temporary file for news sending."));
                } else {
                        if (change_file_mode_rw(tmpfp, tmp) < 0) {
                                FILE_OP_ERROR(tmp, "chmod");
@@ -1154,7 +1648,10 @@ gint procmsg_send_message_queue(const gchar *file)
                                if (fputs(buf, tmpfp) == EOF) {
                                        FILE_OP_ERROR(tmp, "fputs");
                                        newsval = -1;
-                                       alertpanel_error(_("Error when writing temporary file for news sending."));
+                                       if (errstr) {
+                                               if (*errstr) g_free(*errstr);
+                                               *errstr = g_strdup_printf(_("Error when writing temporary file for news sending."));
+                                       }
                                }
                        }
                        fclose(tmpfp);
@@ -1165,22 +1662,17 @@ gint procmsg_send_message_queue(const gchar *file)
                                folder = FOLDER(newsac->folder);
 
                                newsval = news_post(folder, tmp);
-                               if (newsval < 0) {
-                                       alertpanel_error(_("Error occurred while posting the message to %s ."),
-                                                newsac->nntp_server);
-                               }
+                               if (newsval < 0 && errstr)  {
+                                       if (*errstr) g_free(*errstr);
+                                       *errstr = g_strdup_printf(_("Error occurred while posting the message to %s."),
+                                        newsac->nntp_server);
+                               }
                        }
-                       unlink(tmp);
+                       g_unlink(tmp);
                }
                g_free(tmp);
        }
 
-       slist_free_strings(to_list);
-       g_slist_free(to_list);
-       slist_free_strings(newsgroup_list);
-       g_slist_free(newsgroup_list);
-       g_free(from);
-       g_free(smtpserver);
        fclose(fp);
 
        /* save message to outbox */
@@ -1192,8 +1684,36 @@ gint procmsg_send_message_queue(const gchar *file)
                outbox = folder_find_item_from_identifier(savecopyfolder);
                if (!outbox)
                        outbox = folder_get_default_outbox();
+                       
+               if (save_clear_text || tmp_enc_file == NULL) {
+                       gboolean saved = FALSE;
+                       *queued_removed = FALSE;
+                       if (queue && msgnum > 0) {
+                               MsgInfo *queued_mail = folder_item_get_msginfo(queue, msgnum);
+                               if (folder_item_move_msg(outbox, queued_mail) >= 0) {
+                                       debug_print("moved queued mail %d to sent folder\n", msgnum);
+                                       saved = TRUE;
+                                       *queued_removed = TRUE;
+                               } else if (folder_item_copy_msg(outbox, queued_mail) >= 0) {
+                                       debug_print("copied queued mail %d to sent folder\n", msgnum);
+                                       saved = TRUE;
+                               }
+                               procmsg_msginfo_free(queued_mail);
+                       }
+                       if (!saved) {
+                               debug_print("resaving clear text queued mail to sent folder\n");
+                               procmsg_save_to_outbox(outbox, file, TRUE);
+                       }
+               } else {
+                       debug_print("saving encrpyted queued mail to sent folder\n");
+                       procmsg_save_to_outbox(outbox, tmp_enc_file, FALSE);
+               }
+       }
 
-               procmsg_save_to_outbox(outbox, file, TRUE);
+       if (tmp_enc_file != NULL) {
+               g_unlink(tmp_enc_file);
+               free(tmp_enc_file);
+               tmp_enc_file = NULL;
        }
 
        if (replymessageid != NULL || fwdmessageid != NULL) {
@@ -1201,9 +1721,9 @@ gint procmsg_send_message_queue(const gchar *file)
                FolderItem *item;
                
                if (replymessageid != NULL)
-                       tokens = g_strsplit(replymessageid, "\x7f", 0);
+                       tokens = g_strsplit(replymessageid, "\t", 0);
                else
-                       tokens = g_strsplit(fwdmessageid, "\x7f", 0);
+                       tokens = g_strsplit(fwdmessageid, "\t", 0);
                item = folder_find_item_from_identifier(tokens[0]);
 
                /* check if queued message has valid folder and message id */
@@ -1225,8 +1745,13 @@ gint procmsg_send_message_queue(const gchar *file)
                        }
                        
                        if (msginfo != NULL) {
+                               MsgPermFlags to_unset = 0;
+
+                               if (prefs_common.mark_as_read_on_new_window)
+                                       to_unset = (MSG_NEW|MSG_UNREAD);
+
                                if (replymessageid != NULL) {
-                                       procmsg_msginfo_unset_flags(msginfo, MSG_FORWARDED, 0);
+                                       procmsg_msginfo_unset_flags(msginfo, to_unset|MSG_FORWARDED, 0);
                                        procmsg_msginfo_set_flags(msginfo, MSG_REPLIED, 0);
                                }  else {
                                        procmsg_msginfo_unset_flags(msginfo, MSG_REPLIED, 0);
@@ -1238,13 +1763,28 @@ gint procmsg_send_message_queue(const gchar *file)
                g_strfreev(tokens);
        }
 
+       g_free(from);
+       g_free(smtpserver);
+       slist_free_strings(to_list);
+       g_slist_free(to_list);
+       slist_free_strings(newsgroup_list);
+       g_slist_free(newsgroup_list);
        g_free(savecopyfolder);
        g_free(replymessageid);
        g_free(fwdmessageid);
-       
+       g_free(privacy_system);
+       g_free(encrypt_data);
+
        return (newsval != 0 ? newsval : mailval);
 }
 
+gint procmsg_send_message_queue(const gchar *file, gchar **errstr, FolderItem *queue, gint msgnum, gboolean *queued_removed)
+{
+       gint result = procmsg_send_message_queue_full(file, FALSE, errstr, queue, msgnum, queued_removed);
+       toolbar_main_set_sensitive(mainwindow_get_mainwindow());
+       return result;
+}
+
 static void update_folder_msg_counts(FolderItem *item, MsgInfo *msginfo, MsgPermFlags old_flags)
 {
        MsgPermFlags new_flags = msginfo->flags.perm_flags;
@@ -1274,10 +1814,12 @@ static void update_folder_msg_counts(FolderItem *item, MsgInfo *msginfo, MsgPerm
        /* MARK flag */
        if (!(old_flags & MSG_MARKED) && (new_flags & MSG_MARKED)) {
                procmsg_update_unread_children(msginfo, TRUE);
+               item->marked_msgs++;
        }
 
        if ((old_flags & MSG_MARKED) && !(new_flags & MSG_MARKED)) {
                procmsg_update_unread_children(msginfo, FALSE);
+               item->marked_msgs--;
        }
 }
 
@@ -1342,16 +1884,54 @@ void procmsg_msginfo_unset_flags(MsgInfo *msginfo, MsgPermFlags perm_flags, MsgT
                folder_item_change_msg_flags(msginfo->folder, msginfo, perm_flags_new);
 
                update_folder_msg_counts(item, msginfo, perm_flags_old);
+       }
 
+       /* Tmp flags hanlding */
+       tmp_flags_old = msginfo->flags.tmp_flags;
+       msginfo->flags.tmp_flags &= ~tmp_flags;
+
+       /* update notification */
+       if ((perm_flags_old != perm_flags_new) || (tmp_flags_old != msginfo->flags.tmp_flags)) {
                msginfo_update.msginfo = msginfo;
                msginfo_update.flags = MSGINFO_UPDATE_FLAGS;
                hooks_invoke(MSGINFO_UPDATE_HOOKLIST, &msginfo_update);
                folder_item_update(msginfo->folder, F_ITEM_UPDATE_MSGCNT);
        }
+}
 
-       /* Tmp flags hanlding */
+void procmsg_msginfo_change_flags(MsgInfo *msginfo, 
+                               MsgPermFlags add_perm_flags, MsgTmpFlags add_tmp_flags,
+                               MsgPermFlags rem_perm_flags, MsgTmpFlags rem_tmp_flags)
+{
+       FolderItem *item;
+       MsgInfoUpdate msginfo_update;
+       MsgPermFlags perm_flags_new, perm_flags_old;
+       MsgTmpFlags tmp_flags_old;
+
+       g_return_if_fail(msginfo != NULL);
+       item = msginfo->folder;
+       g_return_if_fail(item != NULL);
+       
+       debug_print("Changing flags for message %d in folder %s\n", msginfo->msgnum, item->path);
+
+       /* Perm Flags handling */
+       perm_flags_old = msginfo->flags.perm_flags;
+       perm_flags_new = (msginfo->flags.perm_flags & ~rem_perm_flags) | add_perm_flags;
+       if ((add_perm_flags & MSG_IGNORE_THREAD) || (perm_flags_old & MSG_IGNORE_THREAD)) {
+               perm_flags_new &= ~(MSG_NEW | MSG_UNREAD);
+       }
+
+       if (perm_flags_old != perm_flags_new) {
+               folder_item_change_msg_flags(msginfo->folder, msginfo, perm_flags_new);
+
+               update_folder_msg_counts(item, msginfo, perm_flags_old);
+
+       }
+
+       /* Tmp flags handling */
        tmp_flags_old = msginfo->flags.tmp_flags;
-       msginfo->flags.tmp_flags &= ~tmp_flags;
+       msginfo->flags.tmp_flags &= ~rem_tmp_flags;
+       msginfo->flags.tmp_flags |= add_tmp_flags;
 
        /* update notification */
        if ((perm_flags_old != perm_flags_new) || (tmp_flags_old != msginfo->flags.tmp_flags)) {
@@ -1371,7 +1951,7 @@ void procmsg_msginfo_unset_flags(MsgInfo *msginfo, MsgPermFlags perm_flags, MsgT
  *
  *\return      gboolean TRUE if perm_flags are found
  */
-gboolean procmsg_msg_has_flagged_parent_real(MsgInfo *info,
+static gboolean procmsg_msg_has_flagged_parent_real(MsgInfo *info,
                MsgPermFlags perm_flags, GHashTable *parentmsgs)
 {
        MsgInfo *tmp;
@@ -1388,9 +1968,8 @@ gboolean procmsg_msg_has_flagged_parent_real(MsgInfo *info,
                        gboolean result;
 
                        if (g_hash_table_lookup(parentmsgs, info)) {
-                               debug_print("loop detected: %s%c%d\n",
-                                       folder_item_get_path(info->folder),
-                                       G_DIR_SEPARATOR, info->msgnum);
+                               debug_print("loop detected: %d\n",
+                                       info->msgnum);
                                result = FALSE;
                        } else {
                                g_hash_table_insert(parentmsgs, info, "1");
@@ -1409,7 +1988,7 @@ gboolean procmsg_msg_has_flagged_parent_real(MsgInfo *info,
 /*!
  *\brief       Callback for cleaning up hash of parentmsgs
  */
-gboolean parentmsgs_hash_remove(gpointer key,
+static gboolean parentmsgs_hash_remove(gpointer key,
                             gpointer value,
                             gpointer user_data)
 {
@@ -1423,11 +2002,14 @@ gboolean parentmsgs_hash_remove(gpointer key,
 gboolean procmsg_msg_has_flagged_parent(MsgInfo *info, MsgPermFlags perm_flags)
 {
        gboolean result;
-       GHashTable *parentmsgs = g_hash_table_new(NULL, NULL); 
+       static GHashTable *parentmsgs = NULL;
+       
+       if (parentmsgs == NULL)
+               parentmsgs = g_hash_table_new(NULL, NULL); 
 
        result = procmsg_msg_has_flagged_parent_real(info, perm_flags, parentmsgs);
        g_hash_table_foreach_remove(parentmsgs, parentmsgs_hash_remove, NULL);
-       g_hash_table_destroy(parentmsgs);
+
        return result;
 }
 
@@ -1441,7 +2023,7 @@ gboolean procmsg_msg_has_marked_parent(MsgInfo *info)
 }
 
 
-GSList *procmsg_find_children_func(MsgInfo *info, 
+static GSList *procmsg_find_children_func(MsgInfo *info, 
                                   GSList *children, GSList *all)
 {
        GSList *cur;
@@ -1467,7 +2049,7 @@ GSList *procmsg_find_children_func(MsgInfo *info,
        return children;
 }
 
-GSList *procmsg_find_children (MsgInfo *info)
+static GSList *procmsg_find_children (MsgInfo *info)
 {
        GSList *children;
        GSList *all, *cur;
@@ -1487,7 +2069,7 @@ GSList *procmsg_find_children (MsgInfo *info)
        return children;
 }
 
-void procmsg_update_unread_children(MsgInfo *info, gboolean newly_marked)
+static void procmsg_update_unread_children(MsgInfo *info, gboolean newly_marked)
 {
        GSList *children = procmsg_find_children(info);
        GSList *cur;
@@ -1531,18 +2113,246 @@ void procmsg_msginfo_set_to_folder(MsgInfo *msginfo, FolderItem *to_folder)
  * \return TRUE if the message was moved and MsgInfo is now invalid,
  *         FALSE otherwise
  */
-gboolean procmsg_msginfo_filter(MsgInfo *msginfo)
+static gboolean procmsg_msginfo_filter(MsgInfo *msginfo, PrefsAccount* ac_prefs)
 {
        MailFilteringData mail_filtering_data;
                        
        mail_filtering_data.msginfo = msginfo;                  
-       if (hooks_invoke(MAIL_FILTERING_HOOKLIST, &mail_filtering_data))
+       mail_filtering_data.msglist = NULL;                     
+       mail_filtering_data.filtered = NULL;                    
+       mail_filtering_data.unfiltered = NULL;
+       mail_filtering_data.account = ac_prefs; 
+
+       if (!ac_prefs || ac_prefs->filterhook_on_recv)
+               if (hooks_invoke(MAIL_FILTERING_HOOKLIST, &mail_filtering_data))
                return TRUE;
 
        /* filter if enabled in prefs or move to inbox if not */
        if((filtering_rules != NULL) &&
-          filter_message_by_msginfo(filtering_rules, msginfo))
+               filter_message_by_msginfo(filtering_rules, msginfo, ac_prefs,
+                               FILTERING_INCORPORATION, NULL)) {
                return TRUE;
-
+       }
+               
        return FALSE;
 }
+
+void procmsg_msglist_filter(GSList *list, PrefsAccount *ac, 
+                           GSList **filtered, GSList **unfiltered,
+                           gboolean do_filter)
+{
+       GSList *cur, *to_do = NULL;
+       gint total = 0, curnum = 0;
+       MailFilteringData mail_filtering_data;
+                       
+       g_return_if_fail(filtered != NULL);
+       g_return_if_fail(unfiltered != NULL);
+
+       *filtered = NULL;
+       *unfiltered = NULL;
+       
+       if (list == NULL)
+               return;
+
+       total = g_slist_length(list);
+
+       if (!do_filter) {
+               *filtered = NULL;
+               *unfiltered = g_slist_copy(list);
+               return;
+       }
+
+       statusbar_print_all(_("Filtering messages...\n"));
+
+       mail_filtering_data.msginfo = NULL;                     
+       mail_filtering_data.msglist = list;                     
+       mail_filtering_data.filtered = NULL;                    
+       mail_filtering_data.unfiltered = NULL;  
+       mail_filtering_data.account = ac;       
+                       
+       if (!ac || ac->filterhook_on_recv)
+       hooks_invoke(MAIL_LISTFILTERING_HOOKLIST, &mail_filtering_data);
+       
+       if (mail_filtering_data.filtered == NULL &&
+           mail_filtering_data.unfiltered == NULL) {
+               /* nothing happened */
+               debug_print(MAIL_LISTFILTERING_HOOKLIST " did nothing. filtering whole list normally.\n");
+               to_do = list;
+       } 
+       if (mail_filtering_data.filtered != NULL) {
+               /* keep track of what's been filtered by the hooks */
+               debug_print(MAIL_LISTFILTERING_HOOKLIST " filtered some stuff. total %d filtered %d unfilt %d.\n",
+                       g_slist_length(list),
+                       g_slist_length(mail_filtering_data.filtered),
+                       g_slist_length(mail_filtering_data.unfiltered));
+
+               *filtered = g_slist_copy(mail_filtering_data.filtered);
+       }
+       if (mail_filtering_data.unfiltered != NULL) {
+               /* what the hooks didn't handle will go in filtered or 
+                * unfiltered in the next loop */
+               debug_print(MAIL_LISTFILTERING_HOOKLIST " left unfiltered stuff. total %d filtered %d unfilt %d.\n",
+                       g_slist_length(list),
+                       g_slist_length(mail_filtering_data.filtered),
+                       g_slist_length(mail_filtering_data.unfiltered));
+               to_do = mail_filtering_data.unfiltered;
+       } 
+
+       for (cur = to_do; cur; cur = cur->next) {
+               MsgInfo *info = (MsgInfo *)cur->data;
+               if (procmsg_msginfo_filter(info, ac))
+                       *filtered = g_slist_prepend(*filtered, info);
+               else
+                       *unfiltered = g_slist_prepend(*unfiltered, info);
+               statusbar_progress_all(curnum++, total, prefs_common.statusbar_update_step);
+       }
+
+       g_slist_free(mail_filtering_data.filtered);
+       g_slist_free(mail_filtering_data.unfiltered);
+       
+       *filtered = g_slist_reverse(*filtered);
+       *unfiltered = g_slist_reverse(*unfiltered);
+
+       statusbar_progress_all(0,0,0);
+       statusbar_pop_all();
+}
+
+MsgInfo *procmsg_msginfo_new_from_mimeinfo(MsgInfo *src_msginfo, MimeInfo *mimeinfo)
+{
+       MsgInfo *tmp_msginfo = NULL;
+       MsgFlags flags = {0, 0};
+       gchar *tmpfile = get_tmp_file();
+       FILE *fp = g_fopen(tmpfile, "wb");
+       
+       if (!mimeinfo || mimeinfo->type != MIMETYPE_MESSAGE ||
+           g_ascii_strcasecmp(mimeinfo->subtype, "rfc822")) {
+               g_warning("procmsg_msginfo_new_from_mimeinfo(): unsuitable mimeinfo");
+               if (fp) 
+                       fclose(fp);
+               g_free(tmpfile);
+               return NULL;
+       }
+       
+       if (fp && procmime_write_mimeinfo(mimeinfo, fp) >= 0) {
+               fclose(fp);
+               fp = NULL;
+               tmp_msginfo = procheader_parse_file(
+                       tmpfile, flags, 
+                       TRUE, FALSE);
+       }
+       if (fp)
+               fclose(fp);
+
+       if (tmp_msginfo != NULL) {
+               if (src_msginfo)
+                       tmp_msginfo->folder = src_msginfo->folder;
+               tmp_msginfo->plaintext_file = g_strdup(tmpfile);
+       } else {
+               g_warning("procmsg_msginfo_new_from_mimeinfo(): Can't generate new msginfo");
+       }
+
+       g_free(tmpfile);
+
+       return tmp_msginfo;
+}
+
+static GSList *spam_learners = NULL;
+
+void procmsg_register_spam_learner (int (*learn_func)(MsgInfo *info, GSList *list, gboolean spam))
+{
+       if (!g_slist_find(spam_learners, learn_func))
+               spam_learners = g_slist_append(spam_learners, learn_func);
+       if (mainwindow_get_mainwindow()) {
+               main_window_set_menu_sensitive(mainwindow_get_mainwindow());
+               summary_set_menu_sensitive(
+                       mainwindow_get_mainwindow()->summaryview);
+               toolbar_main_set_sensitive(mainwindow_get_mainwindow());
+       }
+}
+
+void procmsg_unregister_spam_learner (int (*learn_func)(MsgInfo *info, GSList *list, gboolean spam))
+{
+       spam_learners = g_slist_remove(spam_learners, learn_func);
+       if (mainwindow_get_mainwindow()) {
+               main_window_set_menu_sensitive(mainwindow_get_mainwindow());
+               summary_set_menu_sensitive(
+                       mainwindow_get_mainwindow()->summaryview);
+               toolbar_main_set_sensitive(mainwindow_get_mainwindow());
+       }
+}
+
+gboolean procmsg_spam_can_learn(void)
+{
+       return g_slist_length(spam_learners) > 0;
+}
+
+int procmsg_spam_learner_learn (MsgInfo *info, GSList *list, gboolean spam)
+{
+       GSList *cur = spam_learners;
+       int ret = 0;
+       for (; cur; cur = cur->next) {
+               int ((*func)(MsgInfo *info, GSList *list, gboolean spam)) = cur->data;
+               ret |= func(info, list, spam);
+       }
+       return ret;
+}
+
+static gchar *spam_folder_item = NULL;
+static FolderItem * (*procmsg_spam_get_folder_func)(MsgInfo *msginfo) = NULL;
+void procmsg_spam_set_folder (const char *item_identifier, FolderItem *(*spam_get_folder_func)(MsgInfo *info))
+{
+       g_free(spam_folder_item);
+       if (item_identifier)
+               spam_folder_item = g_strdup(item_identifier);
+       else
+               spam_folder_item = NULL;
+       if (spam_get_folder_func != NULL)
+               procmsg_spam_get_folder_func = spam_get_folder_func;
+       else
+               procmsg_spam_get_folder_func = NULL;
+}
+
+FolderItem *procmsg_spam_get_folder (MsgInfo *msginfo)
+{
+       FolderItem *item = NULL;
+       
+       if (procmsg_spam_get_folder_func) 
+               item = procmsg_spam_get_folder_func(msginfo);
+       if (item == NULL && spam_folder_item)
+               item = folder_find_item_from_identifier(spam_folder_item);
+       if (item == NULL)
+               item = folder_get_default_trash();
+       return item;
+}
+
+static void item_has_queued_mails(FolderItem *item, gpointer data)
+{
+       gboolean *result = (gboolean *)data;
+       if (*result == TRUE)
+               return;
+       if (folder_has_parent_of_type(item, F_QUEUE) && item->total_msgs > 0)
+               *result = TRUE;
+}
+
+gboolean procmsg_have_queued_mails_fast (void)
+{
+       gboolean result = FALSE;
+       folder_func_to_all_folders(item_has_queued_mails, &result);
+       return result;
+}
+
+static void item_has_trashed_mails(FolderItem *item, gpointer data)
+{
+       gboolean *result = (gboolean *)data;
+       if (*result == TRUE)
+               return;
+       if (folder_has_parent_of_type(item, F_TRASH) && item->total_msgs > 0)
+               *result = TRUE;
+}
+
+gboolean procmsg_have_trashed_mails_fast (void)
+{
+       gboolean result = FALSE;
+       folder_func_to_all_folders(item_has_trashed_mails, &result);
+       return result;
+}