Related Clues:
- 'Let me know' letters
- Say 'Yeah, I can make it,' say
- "I'll be there" message, e.g
- 'I'll be there' message, e.g
- Party host's request
- SASE insert, perhaps
- Setup provider's abbr
- Request on invitation
- ''Please reply'' invitation letters
- Abbreviation on an invitation
- ''Please reply'' letters
- "Let me know if you're coming" letters
- Say you can go, say
- Post back to a host
- Invitation inits