You may schedule the time for sending out an email with the following steps:

  1. In the message, on the “Options” tab, in the “More Options” group, click “Delay Delivery”.
  2. Under “Delivery options”, select the “Do not deliver before” check box, and then select the delivery date and time that you want.
  3. Click “Send”.

Remarks: After clicking “Send”, the message remains in the Outbox folder until the delivery time. Please keep opening Outlook 2013 until the scheduled email is sent.