Learn how to write the perfect job offer letter email with this example and template. Does it "mean an employment offer is legally binding".An offer letter is a document that holds the terms of employment for a new hire. It includes the salary, benefits, and other important information. Subject: Job offer Body: Dear Sir or Madam, I am delighted to accept the job offer you recently made to me. I look forward to starting work. What is included in a job offer email? They want to see why you want the position as much as they want to fill it. A COVER LETTER (Stating how you feel you meet the qualifications as outline in the job announcement). 3. Fill out an application and watch a short video.