Related Clues:
- Information Age memo
- PDA delivery
- It's made letter writing a dying art
- Shoot a message to
- It might go through a filter
- Atomic reactor
- Spam source
- Google or Yahoo! service
- Notes that whoosh
- Paperless missive
- It might be filtered
- Computer communication
- Letter that requires no postage
- Professional organizer's target, maybe
- Texting alternative