Learn effective membership renewal letter strategies with guide and samples. Improve member retention!We have renewal templates for: 90 Days Out, 15 Days Out, Day of Expiration. Trying to write a membership renewal letter but don't know where to start? Dear Beverly Staib,. Medi-Cal Access Program. Optimize your member renewal letters to keep members coming back year after year. Read our how-to guide and download your free template. More about this in the sample templates, below. 4. Offer flexible dues structures to maintain inclusivity.