Review for Account Colors by Andrea
Rated 5 out of 5 stars
How unwise that Thunderbird forced this great addon out by making it incompatible with TB's new release. Many thanks to the addon developer for creating and updating this great tool for many years. Btw, would you consider raising donations for a new, updated version? I would be happy to contribute.
To create your own collections, you must have a Mozilla Add-ons account.