[header] How to head a letter [title] Open a word processing document. [step] You can use an open source processor on google drive or a fresh piece of paper in a typewriter; however, formal business letters should always be typed and printed, with a signature in pen. [title] Use a sheet of company letterhead if it is available. 
[step] At minimum, formal letterhead includes the person's name, the name of the business, the address of the business, phone number and usually a company logo. This information takes the place of a sender's address in the body of the letter.