The way this feature works in mailbox is you can "snooze" an email. After making your timeframe selection, it will leave your inbox, then return when you select

The way this feature works in mailbox is you can "snooze" an email. After making your timeframe selection, it will leave your inbox, then return when you selected. For example, if you get a work email on the weekend about something you need to take care of on Monday, you can snooze it until "Next week" and it the email will immediately leave your inbox, then return the following Monday.