What information should be mentioned in an invitation letter?

Ans:
Below are the information that the inviter must mention in an invitation letter:
1. The inviter's name.
2. The invited individual's (or multiple individuals') name.
3. The name and occasion of the event.
4. The event venue's address.
5. The time and date of the event.
6. The genre of the event and the appropriate dress code.
7. Optional RSVP address and contact information.