When I go into Windows Mail on my PC, all of my emails on my iPhone disappear with no trace, apart from the deleted ones in the Trash folder. I've also noticed that some emails which I've read on my iPhone do not appear on my PC. I have two email accounts and it happens with both of them. My local O2 Guru says I need to contact my email provider (Madasafish), whereas Madasafish tell me it concerns the iPhone settings. Any help welcome please.