This document summarizes the key parts of a friendly letter:
1) The heading includes the writer's address and date.
2) Below the heading is the salutation/greeting, which begins with a capital letter and ends with a comma or period.
3) The body is in paragraph form and contains the message.
4) The closing is directly under the heading and begins with a capital letter. Sample closings include "Your friend" or "Sincerely."
5) The signature is the writer's name directly under the closing.