4 (The upper item has the greater priority or feasibility... maybe :-)
6 o periodical check of newly arrived mails
8 o list view of newsgroups and subscription of groups from there
9 o full-text search of messages (plain, or hooking up with Namazu)
10 o progress display of time-consuming processes
11 o original icons and logos
12 o designate the displayed headers
13 o user-defined headers
15 o speed-up of filtering
16 o regular expression support at filtering
18 o parallel processing between sending-receiving and others
19 o support for some formats other than MH and mbox (ex. Maildir)
20 o priority (Priority:, X-Priority:, X-MSMail-Priority:)
21 o notification of reception (Disposition-Notification-To:)
22 o modification of display color
23 o customization of key bindings
24 o customization of toolbar
28 o console mode interface
30 o mailing list manager
31 o inline image display on multipart MIME
33 o make the code cleaner
34 o make the process faster
35 o make the dubious English much decent :)
37 Partially implemented features
38 ==============================
39 . make the network related code much decent
40 (processing of time out, multi-threading etc.)
42 . full internationalization
46 . display of HTML messages (composition of HTML message is not scheduled :-P)
50 * multipart MIME (attachments of files)
53 * management of read message on POP server by UIDL
56 * reconnection when connection to news server is broken
58 * preservation of position or size of window
59 * external editor support
61 * extension of quotation format
62 * assignation of location of mail folder
63 * account selection on composition window
64 * posting to newsgroups
65 * completion of mail address
66 * prohibition of multiple execution (with Unix domain socket)