Related Clues:

• Return to sender
• Post to Southend
• Come back and gather a whopper, say
• Dispatch starts from southern England, finishes in Northern Ireland
• Sentence to a prison term
• Option after a transmission failure
• Email function
• Ship, as a package
• "You ___ Me" (Sam Cooke)
• Email command
• Email menu choice
• Emailer's option
• Put in the outgoing mail
• Issue, with ''out''
• Transmit, as an email