69 N. Grant Street, Mid Lake City,
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Mather Smith,
It came as a really nice surprise to find a pay rise in my last pay check. You probably do not realize just how much I needed the extra money, so thank you from the bottom of my heart.
I would like to say that I have never worked in a firm that supports its staff as much as this one does. I love getting out of bed each morning to come into work. I will make sure that I am deserving of the extra money with my future work.