Thunderbird Desktop
Version 52.0 | Released April 10, 2017
Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla.
System Requirements: • Window: Windows XP, Windows Server 2003 or later • Mac: Mac OS X 10.9 or later • Linux: GTK+ 3.4 or higher Details here.
What’s New
new
Folder pane toolbar and folder view selector (replacement for folder view arrows).
new
Optionally remove corresponding data files when removing an account from Thunderbird.
new
Import settings from Becky! Internet Mail.
new
Possibility to copy message filter.
new
Dictionary setting is restored when editing a draft. Content-Language header (RFC 3282) transmitted with message.
new
Calendar: Event can now be created and edited in a tab.
new
Calendar: Processing of received invitation counter proposals.
new
Chat: Support Twitter Direct Messages.
new
Chat: Liking and favoriting in Twitter.
new
Chat: XMPP: Support SASL SCRAM authentication mechanism
new
Chat: Support Jabber/XMPP Message Carbons (XEP-280).
What’s Changed
changed
IMPORTANT: The way images are included in a compose window has changed. Images are now included as data URIs and not as references to parts of other messages or operating system files. This allows better interoperability with office packages such as MS Office or LibreOffice. Images linked from locations on the internet will no longer be downloaded and attached to the message automatically. This can be changed for each image individually via the Image Properties dialog or globally by setting the preference mail.compose.attach_http_images.
changed
Correspondents column now default for all new folders, can be switched off with preference mail.threadpane.use_correspondents.
changed
On Linux PulseAudio is now required to play sound.
changed
Formatting toolbar is now left in place when delivery format is switched to plain text only.
changed
Messages in IMAP folders read on external device are now filtered by default.
changed
Folders backed by mbox storage larger than 4GB are supported without warning (unless preference mailnews.allowMboxOver4GB is set to false).
changed
IMAP caching now uses Mozilla's latest caching technology.
changed
The keyboard shortcut to insert hyperlinks into a compose window was changed from CTRL+L to CTRL+K to align with Office applications.
changed
Chat: Removed Yahoo! Messenger support (since Yahoo removed support).
What’s Fixed
fixed
Message preview pane non-functional after IMAP folder was renamed or moved.
fixed
Editing in paragraph format: Pressing Shift+Enter sometimes doesn't move the cursor to the next line.
fixed
Various corrections when composing messages in paragraph format.
fixed
Paste as quotation doesn't always work.
fixed
Long lines in plain text replies not properly wrapped.
fixed
Undesired white-space before signature in paragraph mode.
fixed
When attachment unavailable, compose shows endless "Attaching..." message instead of error.
fixed
Text encoding of reply sometimes incorrect (uses encoding of last viewed message).
fixed
Text encoding of message display, reply or forwarded message sometimes incorrect (uses encoding of attachment).
fixed
Delivery Format not preserved for saved drafts (Auto-Detect|Plaintext|HTML|Both).
fixed
Reply to own e-mail does not reply with the correct identity.
fixed
IMAP message part caching.
fixed
Links with escaped non-ASCII (international) characters can't be clicked.
fixed
Calendar: Events specified in timezone 'local time' generate alerts in UTC time.
fixed
Chat: XMPP Resource collisions.
fixed
Various security fixes.
Known Issues
unresolved
Large number of blank pages being printed under certain circumstances. To fix this problem, remove all printer specific preferences in the configuration editor.
unresolved
Large attachments may not be shown or saved correctly if the message is stored in an IMAP folder which is not synchronized for offline use. Workaround: Set preference browser.cache.memory.max_entry_size to the value of -1 (unlimited) and create integer preference browser.cache.memory.capacity with the value of 200000 (200 MB, 25 MB per message).
unresolved
Crash due to incompatibility with McAfee Anti-SPAM add-on. Workaround: Start in safe mode and disable McAfee Anti-Spam Extension.
unresolved
Background images not working and other issues related to embedded images when composing email.
unresolved
Crash when compacting IMAP folder.