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.Indicate the exact date that you will be joining the company. If there are multiple offices near you, specify which location you'll be working at in the letter. Streamline your acceptance of job offer email with these 7 effective templates. 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. Thank you for this opportunity and for clarifying the hiring process.