3.Indented
Write your full mailing address, the date and the signature flush with the right side of the page, as in the semi-block format. Place the greeting, such as "Dear Madeline" or "Hello Mason!" flush with the left side of the page. When you write the paragraph content of your letter, instead of leaving the paragraphs flush with the left edge of the page, indent the first line of each paragraph about a half-inch, or according to how you set your tab configuration on your computer. Do not put a space between paragraphs --- the indentation clearly marks each section as separated. If you want to add a postscript (P.S.) or extra note, place them flush with the left margin.