OnPay's offer letter templates let you offer jobs with ease. Learn how to make your offer letter in a few easy steps in this Jotform video tutorial.Learn how to write the perfect job offer letter email with this example and template. Learn how to write a professional and effective Job Offer Letter with this sample template. After completing your design, you can print it out, write your letter, and add it to an envelope. Don't forget the stamp before heading to the post box! What is included in a job offer letter? How to write an attractive Job Offer Letter? What should you write in a good job offer? Casual job offer letter template.