You can control MobiMail notifications from the settings on your device.
How to switch on/snooze notifications from MobiMail:
1. In the Search section of the Windows tool bar, type Settings. Click on the search result.
2. Select the System tab from the menu on the left. Click on Notifications.
3. Locate MobiMail.
4. Use the toggle to activate/snooze notifications. You can also modify the visuals, hide content, turn on/off the sound.