Related Clues:

• Start of a Sondheim song
• FedEx
• Sphere of operation
• Mail away
• Ship or mail
• Mail, as a payment
• Text messaging command
• Drop in the mailbox
• Excite, in slang
• Fax, maybe
• Gmail button
• Email program button
• 'Please ___' (invoice request)
• Use PayPal
• Use FedEx