This post discusses some of these issues that affect some #Galaxy S6 devices.
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The problem I am having is that when I delete an email on my phone; at the next sync interval, the deleted email comes back into my inbox!!
I am using an IMAP format and my settings etc have not changed.
Before the update everything email wise was working perfectly.
Now the update is installed, my emails have been coming in and I am able to send emails without any problems (as before).