Find out how to change the email account sync settings.

1. From the Home screen, tap Settings.
2. Scroll down to and tap Mail.
3. Tap Accounts.
4. Tap Fetch New Data.
5. To receive emails straight after they appear on the server, tap the Push switch to enable. 
   Note: This only works for Exchange email or iCloud accounts.
6. To check for new emails automatically on any other accounts (normal POP or IMAP), tap the required setting (e.g. Every 15 Minutes).
7. Alternatively, tap Manually to disable automatic checking.

The account sync settings have been changed.