The tone of a goodwill letter will vary with the relationship between the writer and the reader. Any goodwill letter must be sincere, enthusiastic, respectful, specific, and personal. 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.