Related Clues:
- Writes to, nowadays
- Drops in a slot
- Greatly impresses
- Floors [an avxwords.com subscription makes a great holiday crossword gift!]
- Gets in touch instantly with a smile surprisingly
- Drops in a post office slot
- Sends to cloud nine
- Online order confirmations
- Really dazzles
- Potential virus sources
- Inbox filler
- Sends via USPS
- Sensational successes, starting with old Wordsworth sonnets
- Inbox fill
- Impresses big-time