Agree to suppressing signature attachments!
Would also be fantastic if you could prevent attachments to be automatically added to the right sidebar, but still visible in the the Activity Log history.
Very much on board with this idea or to at least not add email signature pictures or a way to filter these from being added!
I propose to ad an “attachment exclude” - functionality like:
“*.png” or “*smime*” shall be excluded
A setting to control the attachments we want to save - like pdf only and not png. This would reduce the signature image noise on records.