Rated 5 out of 5 stars

Downloaded, added, found that it hung on attempts to download GnuPG. Then, after manually downloading GPG4Win (GnuPG is the Linux variant), the wizard would not start. I ended-up having to generate a key with GPG4Win, but the Setup Wizard (and other settings) can be found under Enigmail in the drop-down menu with 3 horizontal bars to the top right of the main Thunderbird window and, from that, keys can be imported and other changes implemented.

This review is for a previous version of the add-on (1.9.3).