Related Clues:

• Together (with)
• Sing ___
• Faxed, perhaps
• Faxed, say
• Did some e-mailing
• Mail status
• It's often repeated when announcing a 13-Down
• Go __: agree
• __ concern
• Being worked on
• 'Get ___ Little Dogies'
• Continuing to operate
• On its way, as a letter
• Dropped in the mail
• Full of rapture