Learn effective membership renewal letter strategies with guide and samples. Improve member retention!Edit, sign, and share sample letter online. No need to install software, just go to DocHub, and sign up instantly and for free. Optimize your member renewal letters to keep members coming back year after year. Read our how-to guide and download your free template. In this article, we explain what an official letter is and how to write one, plus we provide a template and example of an official letter for you to reference. The following sample request for permission letters, release forms and licenses are intended as models. They are not form letters. Edit the sample Letter of Support to describe your organization and reflect your views.