Formally accept the job. Directly state that you agree to the terms of the position at the beginning of your email.Mention following things in your mail: Sample Reply: Thank you so much for offering me the job. Take note of the details of the offer, as specified in your offer letter, and respond appropriately. The order of contact can vary depending on the Agency, HR is responsible for extending the tentative job offer in writing to the candidate. 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. 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.