We're so happy to welcome you to the family! Here are 10 things your welcome letter or email to new members must include plus a template that can be customized for your organization.I wanted to share an open letter to my future daughter in law. 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. Dear Daughterinlaw,. Today, you enter our home with new dreams and hope. A good welcome letter acts as a travel guidepointing members to key resources, highlighting benefits, and outlining simple next steps. Help Center is located in the Law Library (1st Floor) Call: (607) 240-5954. Do you want new ways to welcome members into your church?