Review for Colored Folders by GaryOB
Rated 5 out of 5 stars
I used this for years but can't add it to thunderbird now because it is not compatible with TB 68. Update "first week of Oct." What year? Waiting for it.
This review is for a previous version of the add-on (1.2.5.2).To create your own collections, you must have a Mozilla Add-ons account.