Learn how to write a professional job offer letter acceptance mail reply with joining date with an easy format and practical samples. Writing a job acceptance letter is a sign of professionalism.Check out these job acceptance letter samples to write a perfect acceptance letter An example phrase to use would be "Hello. For example, "Thank you very much! I appreciate this opportunity. 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. I applied to a job at a pretty well-known company last month, and after two rounds of interviews they sent me an offer.