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CloseReview for Header Tools Improved by cosygatos
Rated 3 out of 5 stars
It was a lifesaver for me. Until... it stopped working! The function that I mostly used is to edit the Reference field. TB version 91.4.1 64bit.
The workaround that did the job for me (at least for once) was to move the email to a local folder, do the edit and then move back to the Gmail folder.
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