You'll need to formally accept your offer. Before you get started on sending out applications, make sure that you have your resume up to date and have fully filled out all your Handshake profile details.If you are selected for the internship, the stipend amount will be included in your acceptance letter. Internship Offer Letter (ATTACHMENT 1). Below you'll find the best email template for accepting an internship – just fill in the blanks for yourself. Full-and part-time internships are available throughout the year. Specific dates and times are arranged directly with your supervisor. Follow the standard business format to write your letter of intent. A professional image is important. Dear Mr. Frenick: I am reaching out to submit my application for your training specialist internship at Hiland Corp.