When accepting a offer verbally, say 'thank you' for the opportunity, show how excited you are, and make sure to clarify any question marks you have. How to Write an Acceptance Letter for a Job Offer?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. Clearly state your formal acceptance of the job offer. Write a short message explaining that you accept the offer and enclose a formal acceptance letter in the attachments.