Automatic filters to categorize email messages
Automatically prioritize incoming messages using categories such as "important", "work", "newsletters" or "promotional" so they can be handled separately and won't clutter together in one Inbox.
From here, reminders can be set for each category. This way you won't miss any important messages, or have your thoughts interrupted by any needless notifications.
For example, set notifications for emails designated as "important" to send immediately, and "newsletters" notifications to be sent once per week.