Developer reply by Dillinger
Rated 3 out of 5 stars
I would have given more stars but I am concerned about the permissions required for installation which says the extension "requires your permission to have full,unrestricted access to Thunderbird and your computer". Why the computer ?
This review is for a previous version of the add-on (2.5).This is the standard permissions popup for all add-ons.
To create your own collections, you must have a Mozilla Add-ons account.