How To Write A Formal Letter Through Another Person . If, for instance you are writing to a company it would read “dear ms. Write your name and contact information. 47+ Formal Letter Examples PDF, Word Free & Premium Templates from www.template.net A married couple is made up of a man and a woman. Pick a plain white, square or rectangular envelope. The format is same as for other formal letters except for the use of the word through between the ultimate recipient’s address and that of the one through whom it is passed.