Thunderbird Beta Notes

Version 50.0beta, first offered to Beta channel users on October 9, 2016

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.

What’s New

  • New

    Dictionary setting is restored when editing a draft. Content-Language header (RFC 3282) transmitted with message

  • New

    Chat: XMPP: Support SASL SCRAM authentication mechanism

  • Changed

    When replying to a mailing list, reply will be sent to address in From header ignoring Reply-to header

  • Changed

    Formatting toolbar is now left in place when delivery format is switched to plain text only

  • Changed

    IMPORTANT: Changed recipient address entry: Arrow-keys now copy the pop-up value to the input field. Mouse-hovered pop-up value can no longer be confirmed with tab or enter key. This restores the behavior of Thunderbird 24.

  • Fixed

    Reply to own e-mail does not reply with the correct identity

  • Fixed

    Reply with selected text containing quote resulted in wrong quoting level indication

  • Fixed

    Troubleshooting Information was incomplete in Thunderbird 49 beta.

  • Fixed

    Links in add-on details did not work in Thunderbird 49 beta.

  • Fixed

    Chat: XMPP Resource collisions

  • Fixed

    Calendar: improved stability when parsing events and tasks.