Important information that should be in an internship offer letter. DO be as precise and straightforward as possible in the offer letter.Send a well-drafted and formal internship letter to welcome the interns. Use our free HROne internship offer letter template to do the job smartly. Please find the following confirmation. Craft a compelling internship offer letter with our comprehensive guide. Dear, Please check the suggestion below best to my knowledge. The supervisor's name, title, and email address should be included in the letter. Prospective Intern – Preferably the complete name of the prospective intern should be written in the recipient field of the internship offer letter. We are pleased to offer you an internship opportunity at ABC Tech Solutions as a Marketing Intern.