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.In the opening paragraph, thank the recipient for considering you for the position and sending a job offer. Acceptance Forms. Guardianship. Jacksonville, Florida. Scottsdale, Arizona. Generally, the appointment letter should be sent out two to three months prior to the start date of the appointment. How to Fill Out an Appointment and Mandate Letter? Acceptance Letter Format. The driver license or ID card will be issued for the period of time specified on the USCIS document, up to a maximum of four years.