How to Schedule Email Messages in Gmail for Sending Later

Have you ever wanted to write an email message in Gmail now but send it later? Maybe you are sending birthday wishes and would like to delay the delivery of the email message until the actual day. Or you have written an email but would like to schedule delivery in the recipient’s time zone when the message is more likely to get read.

https://www.labnol.org/internet/schedule-gmail-send-later/24867/