Learn how to write a professional job offer letter acceptance mail reply with joining date with an easy format and practical samples. I would like to thank you for extending the opportunity, and I am delighted to share my acceptance of it.Learn why you must write a job acceptance letter and how to write one with a professional touch through our tips and free samples. Mention following things in your mail: Sample Reply: Thank you so much for offering me the job. There are 7 acceptance letter samples you will see here. They can be used for different purposes.