Thank You Letter Format

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Name [write the name of the recipient]
Address [write the official address of the recipient]
Date [write the date on which the letter is being sent]
Subject: [write a precise and well framed subject for the letter]
Dear Mr. /Mrs. /Ms. ______________ [write a proper salutation and title for the recipient]
First paragraph: [The first paragraph should be used by the sender to
express his/ her gratitude and thank the person]
Second paragraph: [In this paragraph the sender must elaborate the reason for thanking and also mention that help or favor done by receiver has a lot of value for you. You can let the person know the importance of the favor for you and how you will utilize this favor.]
Third paragraph: [The sender must conclude his/ her letter and mention that it was a nice gesture and conclude the letter by a final thanks giving line.]
Yours sincerely
Name [write the name of the sender]
Address [write the address of the sender]