If you have accepted the offer letter then the following points MUST HAVE been mentioned in that letter: 1. Your joining date 2.Learn how to write a professional job offer acceptance email. A letter in which you confirm that you agree with all the terms and conditions of your new job and are ready to embark on it is called an acceptance letter. Learn how to write a professional job offer letter acceptance mail reply with joining date with an easy format and practical samples. Hiring Process Overview. The process that a Police Officer Candidate must complete before they can become a Philadelphia Police Officer involves multiple steps. 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.