Here are 10 things your welcome letter or email to new members must include plus a template that can be customized for your organization. NRP Training for Non-Profit Organizations - Reimbursements.Get help drafting the welcome letters to the new members of your nonprofit organization with these two useful writing templates! Optimize your member renewal letters to keep members coming back year after year. Read our how-to guide and download your free template. Enter the name of the corporation at the top of the form to complete the certificate's title. This document contains three template letters to help you grow your nonprofit organization. I hope this letter finds you in the best of health and spirits. Cost, time, and paperwork required to start a nonprofit. Learn how to start a nonprofit in New York with our free step-by-step guide.