- From the Home screen, select Settings.
- Sounds can be tapped.
- To continue, tap New Mail.
- Change or customize the Vibration and Alert Tones choices to suit your needs.
- Simply set the Alert Tone to None to turn off the alert.
If you have any problems setting up an email account on your iPhone 6s, first check to see if your phone is connected to the Internet. Also, double-check that your account is current and that you're using the right password. Also, double-check your email settings to make sure everything is set up correctly.