TS3899: iOS: Troubleshooting MailLearn about iOS: Troubleshooting Mail
Currently Being ModeratedMar 6, 2013 9:31 AM (in response to One two three)
Delete the problem Yahoo Mail account and reinstall it from scratch.
Currently Being ModeratedMar 6, 2013 10:26 AM (in response to One two three)
iOS: Unable to send or receive email
Can’t Send Emails on iPad – Troubleshooting Steps
Setting up and troubleshooting Mail
Try this first - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.)
Or this - Delete the account in Mail and then set it up again. Settings->Mail, Contacts, Calendars -> Accounts Tap on the Account, then on the red button that says Remove Account.