How To Write A Letter Of Interest Email . Correctly formatting your document can help in targeted and professional communication. It is essential to make your letter look and feel significant and interesting to the person who would be reading it as there are dozens of letters pouring into hr departments in companies each and every week. How To Write a Letter of Interest from www.thebalancecareers.com As mentioned above, you need to take the time to do a little digging and find out to who you should address your letter. Indicate how you fit within the organization and if it’s a specified role emphasize how your skills match the role. Make things easy for the reader.