Helper tool to migrate your keys and important settings from Enigmail to Thunderbird 78.
CompactHeader Requires Restart Featured
Add symbol in header plane to switch between compact and expanded view. Work only for Thunderbird 68.0 and older. Currently, there are no plans to update this for newer versions.
A new Thunderbird address book based on the CardDAV and vCard standards.
Mail Merge Featured
Create and Save or Send Multiple Individual and Personalized Messages from a Draft
Mail Redirect Requires Restart Featured
Allow to redirect (a.k.a. "remail") mail messages to other recipients.