When you’re in the send view, you have the opportunity to schedule your email to be sent on a desired date and at a desired time.
You can also schedule to send your email over time (in batches). This is a good way to space out emails if you are sending to a large group of recipients. If you don't see this option when scheduling your email, please send an email to email@example.com to activate this feature in your account.
If you make changes to an email or recipient list after you’ve scheduled an email, your changes won’t take effect when the email is sent. Cancel the scheduled email first, make your changes, and then schedule it again.