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. Start a job offer letter with "Dear" and the candidate's first and last name.Let them know that your company is enthusiastic about the job offer. Here is a sample acceptance letter that you would print out and send through the mail. Be sure to print on quality white paper. Job offer acceptance letter samples.