1. You should write a brief response to an informal invitation. But you should express warmth and enthusiasm. Restate all the necessary details of the letter to avoid misunderstandings later on.
  2. Express pleasure in accepting the invitation. Then restate the date, time, and location of the event to confirm this information.
  3. Express anticipation for the event.


[Senders Name]
[Address line]
[State, ZIP Code]

[Letter Date]

[Recipients Name]
[Address line]
[State, ZIP Code]

[Subject: Normally bold, summarizes the intention of the letter] -Optional-

Dear [Recipients Name],

I had not realized that Halloween was right around the corner. Luckily, my costume is all ready and waiting to be worn for your party on Friday. I am looking forward to having oodles of fun this year too.


[Senders Name]
[Senders Title] -Optional-

[Enclosures: number] - Optional -
cc: [Name of copy recipient] - Optional -