Their are different types of business fields on the basis of which the business letter can be written. business letter have lot’s of example which may be represent as per the business letter has been written in. business letter does not have a particular format, it have a specific structure and format of business head letter.
Here are some sample you can download it from here.
Sales Letter gives the information about the sales of products and services.
When one person wants to complain against someone so he or she written a letter called complaint letter.
Follow up Letter
Follow up letter using for the communicate to employee or customers etc.
Cover letter provides the information about the candidate which he or she not covers in the resume.
Acknowledgement letter gives the information about the receiving or giving something