Did you know that you can compose an email in advance and then have it sent out later?
This is handy if you don’t want to have emails arrive after the business day has ended or right before the weekend. For example, I use this feature to write out Tech Tips on Fridays but the email is held until it’s sent on Monday mornings.
To use this feature in the GMail web interface, you’ll click the small triangle next to “Send” on the send button. That pops up with “Scheduled Send”.
In the GMail app on Android, iPhone and iPads, you’ll click the three dots in a row (either vertical or horizontal) in the top right. You’ll tap “Scheduled Send” to continue.
From there you can select the appropriate time zone (the default is your current time zone) as well as the date and time you want the email to be sent.
For more information, please refer to this link: https://support.google.com/mail/answer/9214606