Related Clues:

• and 2: Advise
• Email directive
• Summon, with "for"
• 'You ___ Me' (1957 R&B hit)
• Overnight, say
• Use email or text
• Wire, e.g
• Forward along
• Counter provides option for those answering letters
• Pop off an email
• Forward, e.g
• What to click after finishing an email
• Pop in the mail
• 'Yes' after 49-Across, if all goes well
• Counter option for those answering letters