The HR Manager,
Date: __/__/____ (Date)
Subject: Joining letter
Dear Sir/ Madam,
My name is __________ (name) and I am writing this letter in reference to the offer letter that I received from your side on __/__/____ (date) bearing letter number _________ (mention).
I would like to inform you that I have accepted your offer letter for the post of ________ (mention post) and will be joining on __/__/____ (date). I thank you for providing me with this opportunity and I ensure that I will be giving my best to your organization.
I request you to kindly consider this as a joining letter. I shall be highly obliged for your kind support.
________ (Contact Number)