Release Notes

Thunderbird Desktop

Version 38.0.1 | Released June 11, 2015

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.

Thunderbird 38.0.1 contains underlying code that is based off of Firefox 38.0.1esr. There was no Thunderbird 38.0 release.

What’s New

new

GMail supports OAuth2 authentication, removing the need to manually select "allow less secure applications" in Google options for the account. (bug 849540)

new

Ship Lightning calendar addon with Thunderbird and enable with an opt-out dialog (bug 1113183)

new

Filter messages when archived (bug 479823)

new

Filter sent messages (bug 11039)

new

Enable search in multiple/all address books (bug 170270)

new

Add support for Yahoo Messenger in Chat (bug 955574)

new

Add a Learn more link to the support page in feeds subscribe dialog (bug 1053782)

new

Allow file-per-message (maildir) local message storage (bug 845952)

new

Show expanded columns in folder pane (bug 464973)

new

Support Internationalized domain name URLs for RSS feeds (Bug 1018589)

new

The editor for twitter should show inputtable character count (bug 736002)

new

Add reading position marker line to conversations (bug 760762)

What’s Changed

changed

Default to using SSL for XMPP and IRC. This might cause issues for self-signed certificates (bug 1122567, bug 1122666)

changed

Make OpenSearch queries open in the user's default browser (bug 1120777)

changed

Disable CONDSTORE support for IMAP to prevent discrepancies in IMAP message status (deleted, unread) on some servers (bug 912216)

changed

Removed rarely used character sets: T.61-8bit, non-encoding Mac encoders, VISCII, x-viet-tcvn5712, x-viet-vps x-johab, ARMSCII8 , map us-ascii to windows-1252, ISO-8859-6-I and -E and ISO-8859-8-E, (bug 1068505 and others.)

changed

Thunderbird will no longer use SHA-1 to sign messages (bug 1018259)

What’s Fixed

fixed

Automatically reclaim IRC nicks during a reconnect (bug 1087566)

fixed

Fixes for connecting to non-standard IRC networks (bug 870556 and others)

fixed

Significantly improve XMPP support (bug 1085022 and others)

fixed

Various improvements when using IRC on moznet (bug 1083768 and others)

fixed

Automatically rejoin multi-user conversations on reconnect for XMPP (bug 1014472)

fixed

Severe UI stutter or freezes getting new mail for very large folders (bug 870556)

fixed

Wrong folder may be deleted when requesting junk delete (bug 1018960)

fixed

Status bar not accessible (bug 934875)

fixed

Addressing autocomplete widget: Typed text in red despite results/matches found if suggestions change by last input (bug 1042561)

fixed

Force display of Sender header if S/MIME sender is the signer (bug 332639)

fixed

Email address with leading/trailing whitespace displayed wrongly with added quotes when composing ["foo"@bar.com] (bug 286760)

fixed

Web site from RSS feed was not rendered correctly (bug 662907)

fixed

Adding unknown email addresses to Mailing list, then deleting ghost duplicate entries from contacts pane, caused dataloss in mailing list (bug 628035)

fixed

Attachment "Save As" files are displayed in Tools/Saved Files (bug 914517)

fixed

Replied/forwarded icons disappear after folder repair, detach/delete (bug 840418)

fixed

Inline spell checker loses red underlines after a backspace is used (bug 1100966)

fixed

Changing location in editor doesn't preserve the font when returning to end of text/line (bug 756984)

Known Issues

unresolved

Automatic addon compatibility update checks were not completed, so existing addon compatibilities may not be accurate.

unresolved

Importing data from Outlook or Eudora crashes (bug 917961)

unresolved

Copy/Paste into plain text editor deletes newlines from quoted text (bug 1143570)

Learn What’s Next

Thunderbird keeps getting better. Subscribe to our newsletter and follow us on social media to stay informed.