The notification appears in the upper-right corner of your screen, without interrupting what you’re doing.
Note: If you are an Outlook user, you would first have to download Mailbutler’s companion app for macOS from here.
Enable Mailbutler notifications on macOS
1. Open your System Preferences.
2. Go to Notifications.
3. Select Mailbutler from the list of apps in the left-hand corner. Tick all the notification settings to allow you to receive Mailbutler notifications.