When you set up an email account on your device, it may also sync your contacts or your calendar to your device. You can change those settings to only sync the data from the account that you want on the device.
1.
From within the Settings app, scroll to and tap Apps.
2.
Scroll to and tap Mail.
3.
Tap MailAccounts.
4.
Select an account.
5.
Select your preferences.
6.
You've completed the steps!
1.
From within the Settings app, scroll to and tap Apps.