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Unlike business headers, many personal letters are handwritten on stationery that says the person's initials or full name at the top. Envelopes may get thrown away and including a sender's address is the best way to encourage a reply. Move on to the date if you are on friendly terms with the recipient. The sender's address should include two lines, the street and the city, state and zip code. A name is not necessary. Format it using the month, day and year. For example, “September 15, 2014.” Personal letters should be sent immediately after the are written to expedite time-sensitive information. If you are writing a formal complaint or letter that will go on record with an organization, you should use the etiquette rules governing a business letter. ” The formality of the address will depend upon how well you know the person to whom you are writing. Always include a colon after the salutation.  You can use “Dear Mr. James,” “Dear Larry James” or “Dear Larry.” Continue the letter, including body paragraphs, a closing, a signature and enclosures.
Choose a monogrammed or personal stationery. Write your address in the top right corner only if the person to whom you are writing does not already know your address well. Write the date that you are writing and sending the letter two lines below your address on the left or right. Don't include the recipient's address in informal letters. Write your salutation beginning with “Dear.