Developer reply by opto
Rated 4 out of 5 stars
Very good, but where is the delete button for the outdated extensions?
This review is for a previous version of the add-on (1.9.1).it is not possible or allowed by Thunderbird to delete them automaticall. You need to go to extra-> addons and delete them manually
To create your own collections, you must have a Mozilla Add-ons account.