int imap_threaded_status(Folder * folder, const char * mb,
struct mailimap_mailbox_data_status ** data_status,
guint mask);
+int imap_threaded_close(Folder * folder);
int imap_threaded_noop(Folder * folder, unsigned int * p_exists);
int imap_threaded_starttls(Folder * folder, const gchar *host, int port);