Thunderbird Notes

Version 52.1.0, first offered to Release channel users on April 30, 2017

Check out "What’s New" and "Known Issues" for this version of Thunderbird below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla. If interested, please see the complete list of changes in this release.

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.

Please refer to Release Notes for version 52.0 to see the list of improvements and fixed issues.

What’s New

  • Fixed

    Google Oauth setup can sometimes not progress to the next step

  • Fixed

    Background images not working and other issues related to embedded images when composing email

  • Fixed

    Various security fixes

Known Issues

  • unresolved

    Crash when compacting IMAP folder

  • unresolved

    Crash due to incompatibility with McAfee Anti-SPAM add-on. Workaround: Start in safe mode and disable McAfee Anti-Spam Extension

  • 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

    Unable to load full message via POP if message was downloaded partially (or only headers) before

  • unresolved

    Large number of blank pages being printed under certain circumstances

  • unresolved

    Some attachments can't be opened or saved if the message body is empty