A confirmation letter validates an oral agreement, an authorization, a directive or a decision. This is actually a correspondence which is sent to confirm or validate details, appointments, oral agreements, or job interviews. A confirmation letter can also be sent for the confirmation of a reservation, a response to an invitation, and receipt of various services, for the delivery of some items, products, to give services or travel arrangements. This shows that letter of confirmation is a formal letter so, it should be written in a formal way on a letter head of a company (if is being sent by a company). Such letters are usually brief, only mention that certain deal, condition or proposal has been accepted by the other party, through this confirmation letter.
As this letter is an official document, name of the recipient should be mentioned clearly on the letter, it also includes some other essential details like: title, name of the department or the company/ organization. The letter should depict well your interest while sending this confirmation letter that you further agree and confirm all that is agreed or mentioned in the first paragraph. It should be having the details what you re confirming. The letter should have all the primary details and some more elaborative points that probably will be important to mention, this could include momentary agreement, all the terms and conditions.
All the agreed upon terms and conditions should also be mentioned for the commencement of the business. The letter of confirmation should be clear without any misunderstanding, as it serves a proof of the agreement of both the partied. You should end your letter in a congratulatory tone, as you are giving your consent so it will be wise to recheck the letter as it may bring problems or misunderstanding for both the points, so it needs to be clear from all ambiguities. Some samples of confirmation letters are attached with this template it will help you while drafting your own confirmation letter.