Since coming back from abroad just over a week ago, all the emails sent from my phone are arriving in my 'sent box' on my computer and IPad in multiple duplication.  I probably sent less than 20 emails and have received in my 'sent box'  over 3000 duplicates.  Discovered this after being told emails to me were being returned and thus checked out all files.   Doesn't happen in 'sent box' on phone only on computer and IPad.  Please help!