Schedule an email to send later in Gmail

Compose your email, then click the down arrow next to Send and pick Schedule send with a date and time. Scheduled mail waits in the Scheduled folder in the left panel; open one and click Cancel send to stop or edit it — it turns back into a draft. You can have up to 100 scheduled emails, they use the timezone you scheduled them in, and they may go out a few minutes after the set time.