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CloseReview for Copy Sent to Current by kitm1956
Rated 4 out of 5 stars
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.
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