An internship letter is a formal document issued to confirm an individual's acceptance into an internship program. It outlines key details such as the internship duration, start and end dates, work schedule, and any specific roles or responsibilities. The letter often includes information about the internship’s objectives, the department or team the intern will join, and contact details for further queries. Its tone is welcoming and professional, aiming to provide clarity and set expectations for the intern while expressing enthusiasm for their upcoming contributions.