FreeFileSync Forum

If you don't like to have those Outlook- and Thunderbird-files in your mirrored location (any more), simply delete those files there once. Once excluded from the sync, they will not re-appear there.

Yes that's what I did. Not a big deal.
OK so it's by design.
I guess it's a new feature request ...

Hi,
I've mirrored left folder to right folder. Then, after it was done, I've entered some exclusions:
*.pst|*.ost (I want all outlook files to be deleted)
\*\Thunderbird\ (I want any subdirectories named Thunderbird to be deleted)

If I run the mirror again, those files and directories don't get ...