Trying to write a membership renewal letter but don't know where to start? Some forms for common tasks such as annual receipts for donations and membership records have also been included.Boost your renewal rates with a foolproof membership renewal letter! Take a few minutes, sit down, and write a letter. Tell them about yourself, maybe share a joke or a riddle and let them know that they are loved. Dear Mr. Rappaport: I am a third year Harvard Law student determined to pursue a career as a public defender upon graduation. Optimize your member renewal letters to keep members coming back year after year. Read our how-to guide and download your free template. Go through the authorization letter samples given below to help you understand clearly the way of writing an authorization letter. As a first year Engineering student at.