An appointment letter (or job offer letter) is usually the culmination of lots of discussion, negotiation and review, so it's especially important that you keep the momentum moving forward with a positive and pointed version of this document.
By reviewing the appointment letter samples below, you'll see examples of the kind of tone and specifics that should be included. While there will be some variation depending on the type of offer you’re making, in all cases, you should be welcoming and detailed.