Here is a template for a new member welcome letter you can tailor for your own association or membershipbased organization. We hope the following sample Written Invitation to CSI Membership will provide a template for your chapter's individualized letter to prospective members.Learn effective membership renewal letter strategies with guide and samples. Improve member retention! Fill out the form below to get a template to help you out: COVID19 Membership Renewal Letter Template. Learn how to write an outstanding recommendation letter for a student applying to college on the Common App, and read some great samples. A guide with the requirements and procedures for starting your own student organization at the University of Texas at Dallas. Boost your renewal rates with a foolproof membership renewal letter!