Here’s how to do both in Windows Mail.

SelectNotificationsfrom the options menu.

Alternatively, selectApply to all accounts.

The Settings gear in Windows Mail

Clear thePlay a soundcheck box to shut down the new mail sound.

Check the box to switch on the sound.

Select or clear any other parameters you want to change.

Notifications in Window Mail settings

Click anywhere in the Mail window to exit the Notification pane.

The changes are saved automatically.

Account selection in Windows Mail notification settings

The “Play a Sound” option in Windows Mail notification settings