Changes from 2.7.1
* New features
o Multi-threading was introduced. Connection to servers, IMAP4 protocol communication, query search and external commands execution will run on another thread. This will reduce the situation where user actions are blocked.
o The feature to add new recipients to address book automatically on sending was added.
o The new filter match type 'is in addressbook' was added. This can be used from filtering, query search and quick search.
o Address book is now sortable by each column.
o Address book search feature was added.
o The setup dialog on the first run became user-friendly.
o The new account setup dialog was implemented. It also supports easy Gmail setup.
o SHA1/MD5 fingerprint and validity period of certificate is now displayed when the verification of server SSL certificate failed.
o The menu item to request disposition notification was added to the compose window.
o The feature to customize the color label text was added.
o The option to set only mail address of recipients when replying was added.
* Feature improvements
o Summary caches are updated on the fly (on receive/move/copy/delete). This improves the performance of opening folders with many new messages.
o The user interface of address book was rewritten using the new API (GtkTreeView). This will reduce the glitches in the older versions.
o Several new APIs were added to the plug-in library.
o Progress is displayed while scanning folders.
o The visibility of message number columns in the folder view is now configurable for each column.
o 'Last 7 days' was added to the quick search options.
o The number of matched messages is displayed at the side of quick search now.
o Description is displayed on the quick search entry when it does not have focus.
o Always show warning dialog when SSL certificate is expired.
o When messages are added to IMAP folders, received-date information is also set using Date header (mainly for Gmail).
o Color labels are saved on IMAP server now (partially compatible with Thunderbird.)
o The auto-wrapping setting is preserved for draft messages now.
o The spell-checking and PGP settings are preserved for draft messages now.
o The 'Enable address auto-completion' setting was added.
o Update check (curl command) timeout was set to 10 seconds.
* Bugfixes
o The update check dialog will not be displayed if modal dialog exists or receiving of mail is active to prevent dialogs becoming uncontrollable.
o The button order of the folder selection dialog was modified.
o Win32: the button order of close confirmation dialog of compose window was modified.
o A workaround for crash caused by enchant with zemberek was added (requires dbus-glib-1 if enchant is equal or greater than 1.4.2).
o The bug that IMAP caches with UIDs larger than INT_MAX were never deleted was fixed.
o The problem that beep sound was out when opening folders which were sorted in descending order was fixed (with GTK+ 2.12 or later).
o The address completion was modified.
o Win32: The problem that GnuPG was not detected correctly was fixed, and Sylpheed can also detect gpg.exe put in Sylpheed folder now.
o Win32: multiple reference to a folder with different letter case is prohibited when creating a new one.
o Some other bugs were fixed.
* Others
o Included Sylpheed FAQ (English) was updated.
o The Japanese manual was updated.
o The message catalogs were updated.
o The folder icons were renewed.
o Win32: 48x48(32bpp) icon was added.
o Win32: OpenSSL was updated to 0.9.8l.
o Win32: GPGME library was updated to 1.1.8.
o Win32: requestedExecutionLevel attribute was added to the manifest of the installer executable.
o The configure option '--disable-updatecheck' which disables the update check feature was added.
o The configure option '--enable-silent-rules' is enabled if automake is equal or greater than 1.11.
http://sylpheed.sraoss.jp/en/