Heres a sample you can tailor to your situation:
Dear :
It is with great pleasure that I accept your offer to join as a under . The goals you outlined for the position are well-matched to my abilities, and I consider it a privilege to join your team.
As we discussed, my annual salary will be , and medical benefits will commence after 30 days of employment.
, thank you for making the interview process enjoyable. I look forward to working with you and the team. I will report to work on . In the meantime, feel free to call me at 555-123-4567.
Sincerely,