A "thank you for joining" membership letter should include a personalized greeting to the new member. Use the member's first name in your salutation.Here are 10 things your welcome letter or email to new members must include plus a template that can be customized for your organization. Do you want new ways to welcome members into your church? Check out these top church membership welcome letter templates and best practices. Get help drafting the welcome letters to the new members of your nonprofit organization with these two useful writing templates! This blog post provides 13 new employee onboarding email templates that you can use to welcome new employees, introduce them to the company, Think of it as your organization's handshakea way to say, "We're thrilled you're here, and here's how to get the most out of your membership.". 1. Enter the date at the top of the letter. Get a customizable welcome letter template for a smooth onboarding process and a great first impression on new hires.