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Join UsVersion 41.0beta, first offered to channel users on September 17, 2015
Visual appearance improved on Windows 10
Checking for new messages correctly works after hibernation again
Emails with long References headers are now decoded correctly
When using the maildir storage format, the INBOX folder is no longer deleted
Thunderbird no longer crashes when executing filter rules when using maildir
Importing to the address book from CSV now works with international characters
(Right-)Clicking on a newsgroup now allows directly composing a message again
Proxy is taken into account for pop3s protocol
Spellchecker no longer jumps between languages
In contrast to Thunderbird 38, hardware acceleration is still enabled by default. If you are experiencing crashes, please disable it in the preferences.