There are many type of sample letter format. Using of this format you can write a letter with a proper way.

How to Write Letter
Business Letters
  1. Writing a Business Letter.
  2. Writing a Complaint Letter.
  3. Writing a Letter of Interest.
  4. Cover Letter Writing.
  5. Writing a Apology Letter.
  6. Writing a Letter of Appeal.
  7. Writing an Invitation Letter.
  8. Writing a Resignation Letter.
  9. Requesting a Letter of Recommendation
  10. Interview Thank You Letter.
  11. Write a Farewell Letter.
Friendly Letters
  1. Writing Friendly Letter.
  2. Writing an Apology Letter.
  3. Writing an Invitation Letter.
  4. Writing Thank You Notes.
  5. Writing Love Letter.