Rated 4 out of 5 stars

by Jeffrey Flaker on Oct. 21, 2014 · permalink

I have to say, this is a very nice addon. However, if Enigmail is installed, it will encrypt every outgoing email with your key only. This makes the message unreadable for the intended recipients. Disable Enigmail with a restart of Thunderbird....run your mail merge, then re-enable Enigmail........