Learn how to write a professional job offer letter acceptance mail reply with joining date with an easy format and practical samples. Before you ask for status of the offer letter through mail, you should ask yourself if enough time has lapsed since you last heard from them.Streamline your acceptance of job offer email with these 7 effective templates. Struggling with writing a job offer letter? These three offer letter templates will help you create the perfect job offer email in no time. Include a space where the potential employee can sign and date the letter to signify their acceptance.