Learn how to write a professional job offer letter acceptance mail reply with joining date with an easy format and practical samples. Learn why you must write a job acceptance letter and how to write one with a professional touch through our tips and free samples.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. A job acceptance letter lets you outline the details of the job so that you are clear about your role in the company prior to your joining. The first thing you should put on your job acceptance letter is the date. Include it underneath the header close to the top of your letter. Thank you for this opportunity and for clarifying the hiring process. Learn how to write a job acceptance letter with this guide. Learn how to write a professional job offer letter acceptance mail reply with joining date with an easy format and practical samples. Thank you so much for the opportunity and for extending me a job offer.