I[ve had iPhones since iPhone 4, and never had this problem. I need help. Got my new iPhone 7 Plus today and as usual I downloaded the contents of my old iPhone 6 from iCloud. Most of the apps I had didn't transfer and I'd done this for five phones over the years. To make things worse, every app that had a username and password didn't move over. To make things evn worse the mail app decided to download every email on my phone since 2007--about 40,000 of them, even those I had commited to trash. Does anyone know what I can do to stop this, and does anyone know a way to delete all emails? At this point, I sign into email and get 1000 emails downloaded. I appreciate eanything you know abut this,