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Tuvok, when I first had the iPad ( Christmas) it worked perfectly, no disappearing emails at all. Only problem was, delete box didn't empty at all, I had every email I had received in there, if I deleted them from trash they came back. I researched settings and found a way to do this by making delete box empty after one day. The disappearing started about a week or so ago.
I am not technically minded, so I get confused when you talk about server and computer. The emails appear on both PC and I pad. Before if I deleted them on ipad they didn't delete on main pc. Do you reckon I need someone to come and sort me out.