Login To Gmail
Click on the Compose Button
Compose your message
Click on the down arrow in the bottom right hand corner of the message window
Click on Request Read Receipt
Click Send
NOTE:
To protect users' email addresses, Gmail only delivers read receipts for messages sent to the user's address, not messages sent to group mailing lists or aliases. So while you will be able to get read receipts from an individual, or a message with more than one email address in the subject line, you will NOT be able to turn on read receipts for an email going out to a distribution list (Example: District Certified and Classified).