[Insert Date]
Dear [Insert Manager Name],
Please accept this letter as formal notification of my resignation from the [insert position] with [insert company]. My last day will be [insert date].
I must thank you for the opportunity to work in this role for the past [insert time]. During my experience, I have [insert opportunities, projects, people you have gotten to know, etc.], and for this I am very thankful. I deeply appreciate the time and attention you and the team have dedicated to my professional growth and development.
In the next two weeks, I will complete all pending assignments, and I am willing to assist in the transition process in any capacity needed.
I wish you and the company continued success and prosperity and hope to keep in touch.
Sincerely,
[Insert Name]