HOW TO Schedule messages for sending later
1 Create your message
Sometimes you need to write a message that won’t be sent until a specific time, such as a a news announcement or anything else you don’t want to send too soon. Create your message as normal in the Mail app.
2 Press for longer
Instead of just tapping the Send button, tap and hold it. You should now see the scheduling menu with four options to Send Now, Send 21:00 Tonight, Send 08:00 Tomorrow or Send Later. Select the fourth Send Later option.
3 Pick your time
You should now see a Calendar panel that enables you to set the date and time for your message to be sent. It’s important that your iPad is both switched on and online at the scheduled time or it won’t be able to send the message.