__________ (Company Name),
Date: __/__/____ (Date)
Subject: Acceptance of promotion offer
Most humbly, I would like to inform you that my name is _______ (mention name) and I have been working in _________ (department) of your reputed company. My employee ID is ___________ (mention employee ID).
This letter is in reference to the promotion offer that I have received from your end. I am glad to inform you that I have accepted all the terms and conditions for the promotion to __________ (mention post you have been promoted to). Also, I hereby confirm that I understood the change in my responsibilities and abide by all the terms and conditions/ latest protocols.
I am highly thankful for you to consider me deserving of this promotion.
________ (Contact Number)