ipad suddenly cannot send mail

Are you able to access your email using a web-browser and BT’s webmail page? If so, you have proved that your Username and Password are correct.

https://home.bt.com/login/loginform?TARGET=$SM$https%3A%2F%2Fsignin1.bt.com%2Fbtmail%2Fsecure%2Femaillogin

If you are confident that you are using the correct account credentials, you can start fault finding:

• If you can't receive email on your iPhone, iPad, or iPod touch - Apple Support
• If you can’t send email on your iPhone, iPad, or iPod touch - Apple Support

What happens when you try to receive or send email? Do you see any errors - and if so, what do you see?

If email is failing to send or receive, you are likely to see indicative errors at the bottom of the mail sidebar - the wording of the error usually providing sufficient information to determine the nature of the problem.

If errors suggest a password error, you can update your account password in iPad settings. Note that you must input the password in two locations - one for your send (SMTP) server, and the other for the receive (IMAP) server:

Settings > Mail > Accounts > [Your BT Mail account] > [Account] >

• [Incoming Mail Server] Password - update your password as required
• [Outgoing Mail Server] SMTP > [Primary Server] > Password - update your password as required

Deleting and re-adding your email account is sometimes the easiest way to resolve a problem with a specific Mail account. After deleting the account, perform a forced restart before re-adding the email account to your iPad.

• Delete account:

Settings > Mail > Accounts > [Your Mail Account] > Delete Account

• Force restart the iPad:

Force restart iPad - Apple Support

• Add Mail Account:

Settings > Mail > Add Account