17000 emails appear on new iPhone
My iMac Mail account deletes mail from the server on retrieval of an email - i carefully housekeep my emails on my iMac and only have a hundred or so in my inbox BUT my new (first) iPhone has downloaded 17000 emails - every email i have ever had since i signed up with NTL years ago. Is there a way to bulk delete them from the iPhone AND stop them re-appearing. Help much appreciated.
iPhone 5, iOS 6.1