A problem arose several months back on my S22 where emails that I had deleted using other emails clients on  my Windows PC were still showing in my INBOX.

I installed BlueMail on my S22 and it didn't have this problem.

This sadly resulted in my moving over to using BlueMail - which is actually pretty good - but I really like the picture resizing function in Samsung email when emailing out pictures.

Just the other day though - after months of frustration - I determined that if I changed the Sync schedule from "Auto (when received)" to "Every 15 minutes", the problem went away.

I had used the "Auto (when received)" on my S10 before this and on my S22 until, out of the blue, this problem arose several months back.

I'm happy now but frustrated that I had to go through this.

I should mention that I had the same problem on my Samsung Tab S9 FE and this fixed the problem there as well.