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CloseReview for Remove Duplicate Messages by Gary Dale
Rated 1 out of 5 stars
I tried it on a different inbox after compacting the folder so that the index was valid. I got the same result - all e-mails older than two weeks were removed.
It works better on some sub-folders but its ability to recurse into sub-folders seems sporadic. Sometimes it does and sometimes it doesn't. I have no idea why.
And I've got some subfolders that have duplicate messages that it identifies and says it will remove but doesn't. While not dangerous the way its behaviour on the inbox is, it's also not useful.
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