Release Notes

Thunderbird Desktop

Version 45.3.0 | Released August 30, 2016

Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.

What’s Fixed


Disposition-Notification-To could not be used in mail.compose.other.header


"edit as new message" on a received message pre-filled the sender as the composing identity.


Certain messages caused corruption of the drafts summary database.


Various security fixes

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