69 N. Grant Street, Mid Lake City,
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Mather Smith,
We are extremely grateful for putting us up in your home last month during the York conference. We found that the time spent with you was the highlight of our visit, and it has been too long since we had a chance just to chat and catch up with each other. I know it probably wasn’t easy to make the space for us and appreciate everything you did to make us feel welcome. We really must return the favor and insist that you visit us back in California soon.