Developer reply by Giovanni Coriasco
Rated 2 out of 5 stars
Not compatible with latest version of Thunderbird 3.6.12. Won't install.
This review is for a previous version of the add-on (1.2).I cannot understand what kind of TB you may have, since the current latest versions are the 3.3a1pre (development) and the 3.1.6 (stable): I have tried my extension with both of them and I can confirm it is installing and working. Are you perhaps talking about FIREFOX 3.6.12? Of course this addon won't install on it because it has been made for THUNDERBIRD...
To create your own collections, you must have a Mozilla Add-ons account.