Outlook Web Access (OWA)

1. After writing your message, click the v button beside Send.
   
   
   
   
2. Press Send later.
   
   
   
   
3. Select Custom Time.
   
   
   
   
4. Choose the date and time you want your message to be delivered. Click Send. Your message will stay in your Drafts folder until the scheduled sending time.
   
   
   
   
5. If you want to edit your message or change the delivery time, see your Drafts folder. Click on the message and press Cancel Send. You will have to re-schedule your message by repeating the steps above.

Outlook for Windows

1. In the message, click the Options tab.
2. In the More Options group, click Delay Delivery.
   
   
   
   
3. Under Delivery options, check the box for Do not deliver before, and select a date and time.
4. After you click Send, the message remains in the Outbox folder until the delivery time.

Outlook for Mac

1. Click on New Message.
2. Address and compose your message.
3. Click on the arrow beside the Send icon and choose Send Later.
4. Set the date and time for the message to be sent. Click OK. It will remain in your Outbox until the selected time.