To, [Manager's Name], [Designation], [Company Name]
Date: [Date]
Subject: Resignation from the post of [Your Designation]
Dear [Mr./Ms. Manager's Name],
I am writing to formally resign from my position as [Your Designation] at [Company Name], effective [last working day, typically after the notice period]. Please accept this letter as the required [e.g. one month's] notice.
I am grateful for the opportunities and support I received during my time here. I will do my best to complete my responsibilities and hand over my work smoothly before I leave.
Thank you for everything.
Sincerely, [Your Name] [Designation], [Employee ID]