How To Write A Letter That You Know Someone . Give our marriage a second chance. It might take a little effort to figure that out, but it does make your cover letter/application stand out. Writing formal letters from www.slideshare.net Let them know that you’re in the relationship for the long haul by alluding to some imagined future plans that you want to see come to fruition. Like the salutation, it should be determined by your relationship with the recipient. Explain how you know the person.