Review for Contacts Sidebar by Nick222
Rated 5 out of 5 stars
Version 1.7pre from official site install and work on Thunderbird 38.2.0 good !
To create your own collections, you must have a Mozilla Add-ons account.
Version 1.7pre from official site install and work on Thunderbird 38.2.0 good !
To create your own collections, you must have a Mozilla Add-ons account.