Schedule send in Gmail
Gmail started to rollout “schedule send”. That’s great news! Previously, you had to use a third-party extension, such as Boomerang or RightInbox, to get this functionality.
Scheduling your emails to be sent at a later date/time gives you greater control, allowing you to shift your work time to whenever is most convenient to you and your recipients.
It will become available to all G Suite editions by the end of this month. Read more about it here.