Review for Start with Inbox by n2trainz
Rated 5 out of 5 stars
Just installed on Thunderbird 115.3.3. I wanted to open T'bird using a local folder with the latest message showing. It's doing that perfectly.
I had been using another add-on to do this previously, but T'bird 115 broke it. Glad I found this replacement.
To create your own collections, you must have a Mozilla Add-ons account.