Todo:
(*) Finish PGP support:
    - track down elusive PGP-sign corruption bug.
    - enable public-key retrieval.
    - key-selection panel for recipients (look into cryptor.bundle's method.)
    - lock / sign icons in TOC, if possible.
(*) Incorporate SuperCite-style quoting-enhancements
    [from holger@tciyf.kiss.de (Holger Graudejus)].  Needs some work since
    they break existing quoting-style.
(*) NEXTTOYOU MailTIFF support.
(*) Incorporate SelectionSmartTable patch.
    [from Marc Guenther <yoda@cis.uni-muenchen.de>]
(*) Investigate Auto-spellcheck sometimes prevent delivery bug.
    (use Alt-deliver or Ctrl-deliver for now.)
(*) Investigate Mailfetch <-> XImage downloading deadlock.
(*) Restore textual representation of Smilies when quoted / forwarded.
(*) Move this TODO into online help.

Wishlist
(*) Add command to strip selected messages of all NeXT/MIME/uu attached files. (== strip command)
(*) Alias add removes old with identical name
(*) Sort by Threads
(*) Add command to fix current sort order.
(*) Allow user to specify additional header lines on a per-message basis.
(*) Re-add signatures when external programs launch Compose windows.
(*) Selectable quotation fonts
(*) NeXTmail indices
(*) Restore Drafts Deletes option (Too difficult to do right without Mail.app source ?)
(*) Retry all 0-length XImageURL images
(*) Force re-dl of XImageURLs.  Expiry ?
(*) Spell-check Subject: line
(*) Add pref panels for undocumented Mail.app options
(*) Add icon well for Mail Document
(*) Allow separate local signature. [I think this is already supported --TRH]

(*) New-mail indicator on subdirectories in Mailboxes panel.
(*) Per-mailbox preferences, e.g. Reply-To:.
(*) Factor HTTP support out of NXImage category to its own object.
(*) Combine HTTP with MimeFetcher for transparent FTPProxy support?
(*) HTTP(proxy) authentication.
(*) Index search should search in headers.
(*) Support X-pgp-Key-URL: header?  X-pgp-sig: and friends?
(*) Mailbox Inspector (for size statistics a la WM inspector, and per-mailbox preferences).
(*) recognize symlinked mboxes.
(*) Localize Images directory.
(*) Colorize quotes in incoming messages.
(*) Fancy PGP status report.

Given Up On:
(*) Fix bug where Mail.app always saves drafts in NeXTmail format (add Received: ..NeXTmail.. _only_ for NeXTmail messages) (nah.... let Lennart fix that)
(*) Mail filtering (including Mail sounds for each box) (leave that to the dedicated Procmail.bundle)
(*) Fetch mail with Pop/Imap (better leave that to Procmail.bundle too)
(*) Workaround XFace/Mime conflicts.
