Review for Contacts Sidebar by H H
Rated 5 out of 5 stars
Like previous posters, I am also running the latest versions of Thunderbird (Shredder) and the most recent 0.8alpha build available from the author's website does not work. Please update to restore compatibility as this is a wonderful add-on and for the Mozilla crew represents an absolute miss in the sense this functionality is not inherent in the core product.
To create your own collections, you must have a Mozilla Add-ons account.