Have an iPad 2 with iOS 7.0.2 that has suddenly stopped sending emails through btinternet.com. It has been working fine for months, it continues to receive emails (so the password is OK), I have an iPhone with (as far as I can see) an identical set-up which sends most of the time. The sending from the iPad seems to work when linked by wifi. I have reset the email system on the iPad, but this seems not to help. So - any thoughts? Is it a problem with my ISP? Or some variable deep in the iPad that is not set correctly?