these enhancements:
* Message and mailbox caching on the server side, resulting in much
increased performance and much less web server and IMAP server load.
* Rewrite of much of IMP's core libraries, resulting in more efficient
memory usage, more efficient IMAP queries, smaller session sizes, and
increased performance.
* WCAG 1.0 Priority 2/Section 508 accessibility guidelines compliance.
* Javascript auto-complete contact list searching.
* Can now have multiple browser windows open without destroying the
open session.
* Logging of sent messages.
* Add protection against CSRF attacks.
* Improve WYSIWYG editors to support more browsers and offer more choices.
* Server configuration to limit maximum number of recipients per message
and maximum number of sent messages over a certain period of time.
* Improved templating of output code to ease local customization.
* Additional maintenance tasks to clean old messages from mailboxes.
* Sorting is now saved per mailbox rather than across all mailboxes.
* On IE and Firefox, warn users before closing popup compose window.
* Add support for symmetric PGP encryption.
* Preference added to dictate default cursor location in compose textarea.
* Preference added to only verify PGP & S/MIME signed messages on
user request.
* Forward messages as RFC 822 parts by default; provide more options for
forwarding messages; and be smarter about what part to use as body
text depending on current editor (text vs. html).
* Javascript code now uses the prototype js library, resulting in more
robust code and more available functionality - for example, non-modal
newmail popups.
* Add server configuration to limit the maximum size of MIME message
data that can be displayed inline.
* Use tidy extension (if available) to clean up display of HTML messages
and clean up HTML composed messages.
* Add RSS/Atom feed for mailboxes.
* More/improved display options for the folder lists and better handling
of non-private namespaces.
* Improvements/cleanups to the imap quota drivers.
* Add additional hooks after certain actions (i.e. post-login,
post-compose).
* Add support for sending e-mails with Internationalized Domain Names
(IDN).
* Fetch public PGP keys from keyserver if not available in address book.
* Add configuration for folders that may not be modified.
* and much, much, much more.
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