As a job seeker, you may be offered many positions with many different companies. Once you have decided which offer to accept, you must contact the company you plan to join. Writing an acceptance letter is the most professional way to accomplish this task.
I was pleased to receive your offer of the position of [Insert Position Here] at [Insert Company Here]. Your offer is quite fair, based on the position's responsibilities and my qualifications. Please record this letter as my official acceptance of the position.
Your confidence in my ability to perform the duties required will be rewarded. The experience and judgment I have gained over the past years will enable me to perform these duties successfully and satisfactorily.
I look forward to working with you in the near future.