Related Clues:

• It doesn't leave a paper trail
• In-box input
• Spam, maybe
• Terminal message?
• Stamp saver
• Cold cuts, e.g.
• Potatoes' partner
• Vegetarian's no-no
• Dot com letters
• Spam, ham or lamb
• It might arrive with a beep
• Potatoes partner
• Modern missive
• Dot-com communication
• Modern memos