Customize your Mail notifications on your iPhone or iPad
Get sound alerts when you receive a new email or show the number of unread emails in your inbox on your Home Screen.
Change your Mail notifications
Go to Settings > Apps > Mail.
Tap Notifications.
Tap Customize Notifications.
Tap the email account.
Turn on the settings that you want, like Alerts or Badges.
When you turn on Badges, the number of unread emails in your inbox appears above the Mail app on your Home Screen.
When you turn on Alerts, there is an option to customize your Sounds and change the alert tone or ringtone. The sound that you select will play when you receive a new email.
About your unread messages badge for Mail in iOS 18.2
When you use the categories option in Mail in iOS 18.2, the badge alert for Mail on your Home screen only shows the number of unread messages in your Primary category. You can change your Mail notifications so that this badge shows the number of all unread messages:
Go to Settings > Apps > Mail.
Tap Notifications.
Tap Customize Notifications.
Under Badge Count, tap All Unread Messages.