Rated 5 out of 5 stars

Wanted to do a simple copy job based on a search result, and to my surprise Thunderbird doesn't support copying search results out of the box. By saving the search results and using this add-on, it was quite easy. A bonus that it also has the option to not make duplicates, which is something Thunderbird's native copy feature doesn't account for.
Only thing that could've made this better was an option to cancel the copy job, but I imagine there might be limitations.
One other thing: Thunderbird's builtin copy feature seem to stop at 9000 exactly, at least that's what I saw yesterday. This addon just keeps on trucking, I doubt there's a limit.

Rated 5 out of 5 stars

It did copy all the emails, folders and subfolders from one account to another. It copies the emails first and at the end it create folders and sorts out emails. Worked pretty good.

Rated 5 out of 5 stars

Finally the missing add-on. It works exactly how explained in "Steps to Use the Extension" that pop ups after the installation.

Rated 1 out of 5 stars

This add-on doesn't actually copy folders, it just moves/copies the emails that are in them to another folder.

Hi, it will copy all emails in selected folder and all subfolders with messages as well. The top folder where you paste the messages must already be created in destination, or you can paste it in one level above.