Related Clues:

• Correspondence
• Spam, e.g.
• Online item
• Modern correspondence
• It doesn't leave a paper trail
• In-box input
• Contacts quickly, perhaps
• Spam, maybe
• Secretarial work
• Terminal message?
• Stamp saver
• Dot com letters
• It might arrive with a beep
• Contents of some in-boxes nowadays
• Business letters