Rated 3 out of 5 stars

An Update for Thunderbird 68 is highly appreciated. Especially nowadays (Ransomware etc.) this protection is very important.

This review is for a previous version of the add-on (0.11). 

The new version supporting Thunderbird 68 just got approved by the reviewers and is now available for download.
If you are already using Thunderbird 68, the Add-On should be updated automatically.