In the opening paragraph, thank the recipient for considering you for the position and sending a job offer. Call or email the person who made you the written offer.I am writing to confirm my acceptance of your employment offer on April 20 and to tell you how delighted I am to be joining XYZ Corporation in Chicago. An example phrase to use would be "Hello. Middlesex Community College offers flexible and affordable options to guide students of all ages, backgrounds, and goals on their paths to success. What's an offer letter?