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.Streamline your acceptance of job offer email with these 7 effective templates. Thank you for this opportunity and for clarifying the hiring process. The best way to decline a job offer after accepting it, but then changing your mind about wanting to go there and work there?