Rated 4 out of 5 stars

le kitm1956 ar Meith. 14, 2016 · buan-nasc

As others have said, essential if you file original messages and their replies together.

As suggested elsewhere (https://addons.mozilla.org/en-GB/thunderbird/addon/copy-sent-to-current/reviews/782689/) I'd love to see a folder search tool instead of paging through folder trees.