Delaying the sending of an email message
If you would like to delay the delivery of an email message within Outlook 2007 follow the steps below:
1. When you are creating your message, click on the Options tab
2. In the More Options group, click Delay Delivery .
3. Click Message Options
4. Under Delivery options, select the Do not deliver before check box, and then click the delivery date and time that you want.
5. Click Close
After you click Send, the message will move and remain to the Outbox folder until the delivery time.
Note: If you are using a POP3 account, Outlook must remain open until the message is sent.