If you would like to acknowledge the receipt of an offer letter, here is a sample template you can use to write an acknowledgment letter after receiving an offer letter.
[Name of HR]
Regarding the offer letter dated [date], I would like to express my sincere gratitude to you and the management. I am thankful for being acknowledged for my skills and my capability for the position of [Job role]. I hereby accept the offer and pledge my utmost dedication to my job role and duties.
I agree to the stated terms, conditions and the salary package offered to me. I have waited too long to be a part of [Name of organization] and will not miss this great opportunity. Looking forward to working to the best of my capabilities and contributing to the organization’s progress.