Review for Nostalgy by Josef
Rated 5 out of 5 stars
I too depend on this add-on. I have hundreds of mail folders, which are easily accessible with this addon by typing part of their name. Since Thunderbird 68.? the interface does not seem to work any more, along with a lot of other add-ons. Now it takes me 3 to 4 times the time from before to save a message into the right folder.
Please, please update this add-on, and complain to Thunderbird for changing the API.
To create your own collections, you must have a Mozilla Add-ons account.