Parts of a business letter:
- letterhead (or senders address for plain paper),
- date,
- inside address,
- reference line (if applicable)
- salutation,
- body,
- complimentary close
- signature
- name of sender printed or typed
- enclosures listed (if applicable)
There are a number of types of business letter like full block style and modified block style. The standard business letter will show you the header, date, recipient's name and address, salutation, body of the letter (message) and salutation including signature.
Take note of the margin (top, bottom, left and right), font, punctuation, line spacing, and grammar and spell check. The greeting is followed by a colon (or comma) while the salutation should have a comma.