Related Clues:
- Modern means of relaying jokes
- Spam, sometimes
- Alternative to the post office
- Unstamped letters
- Some have worms
- Send with a click
- Inbox item
- Cyber-letters
- Inbox accumulation
- Messages that may contain emoticons
- ___ number
- Long-distance copy
- Monitored communications?
- Filtered stuff
- Interoffice memo, maybe