It should be briefed and focused on the recipient. It may be handwritten rather than typed. in this letter style, the inside address may appear at the bottom of the page. A comma may be used instead of a colon after the salutation. A customized letterhead is used for business correspondence. Email may also be appropriate in less formal situations especially if the addressee expresses a preference for it or if time constraints require it. Furthermore, a letter of congratulation or condolence should never be written on someone else’s behalf.