Learn how to write a professional job offer letter acceptance mail reply with joining date with an easy format and practical samples. Declare your acceptance of the position in the clearest possible terms.Ready to offer someone a job? Create a free Employment Offer Letter outlining the details of your offer. The offer letter fills the details about. Company Name), as outlined in the offer letter. I am excited to join the team and contribute towards the growth of the company. Completing the Letter of Offer.