I'm not sure which generation of iPad this is but I guess it's about 6 or 7 years old (wild guess). The model number is MC954LL/A and the version (of software?) is 9.3.5. That's all that I can readily find under "About", in settings. It's my wife's device so I apologize but yes I can see the bad behavior myself when I've tried to resolve the issue upon her pleading. There are a few different mail accounts but I am concerned about one for now. It is a standard POP and SMTP serving set within the locally popular ISP, Suddenlink.net. Mail is fetched just fine and dandy and I presume it can be sent without difficulty as well. Problem is, my wife is neglectful and her inbox seems always to be jam packed with junk. Mind you, the account is CLEARLY set to "Delete mail from server when it is moved out of the Inbox" - NO QUESTION OF THAT. But it doesn't seem to work. Recently she (wife) tried a "Trash All" and it did move the mail to Trash but minutes later it came back to inbox. In fact I believe it was in BOTH places but for some inexplicable reason the Trash number of items was slightly lower. This is all so danged spooky!!! I can READILY reproduce this odd behavior so you wizards out there tell me what to try next. But wait, I've barely just begun! When I delete everything in the Trash and go back to the list of boxes in that account, it still shows a non-zero item count; yet when I enter the Trash it gives me that big "NO MAIL" sign. And by now the Inbox is full again with the precise same mail I've deleted! (over 200) But hey! I got this bright idea to go into my wife's mail (with her permission, silly!) at Suddenlink's WEB INTERFACE. Okay, there are the 229 items of mail. I Trash them all then go into the Trash and delete them all handily, with minimal effort. And sure enough, Suddenlink reports that I am now using ZERO megabytes of my mail storage allotment, when earlier it was 9+. So those nasty junk mails are truly deleted from the server. But when I go back to the iPad, it's the exact same story as before: Inbox eventually gets all its former contents back and attempts to Trash them don't appear to work as expected. WOW, WHAT an AWFUL MESS!! PLEASE HELP! This is disastrous goings on!