Rated 5 out of 5 stars

Nostalgy is basically a must-have for me, at this point. The upgrade to TB 78, which I regrettably allowed to happen, deprived me of it.
I have now spent several days trying to get reverted back to TB 68 (I hadn't saved my profile files, so I couldn't go back to 68 without getting the corruption possibility - but of course, from my point of view, it is TB 78 that corrupted my address books, my calendar, and possibly my filters - since I can't go back to TB 68 with them).

I don't know if anybody from Thunderbird is listening, but I will NOT be moving forward to TB 78 unless and until Nostalgy is there and working.

Rated 4 out of 5 stars

This is indeed a very useful extension, and I have gotten it programmed "into my fingers". Unfortunately, it became less useful with the most recent release of Thunderbird. Now the popup window with a selection of recent relevant folders doesn't happen anymore, which is a real shame. Developers, please bring back this feature!

Also, the automatic save folder name, which appears in the status bar at the bottom, is very frequently incorrect, being just a folder that I save to quite often, but not relevant to the one I want to save to; yet I have done enough saves to that one that Nostalgy should be "trained" on it.

This review is for a previous version of the add-on (0.2.32).