Do you want new ways to welcome members into your church? Check out these top church membership welcome letter templates and best practices.Below is a sample letter for your hospitality team as they welcome new members to the church. These templates of welcome messages for church visitors. Use them in letters, connection cards, your bulletins and your welcome packets. Here are 10 things your welcome letter or email to new members must include plus a template that can be customized for your organization. New Member Registration Form. For full screen viewing: Click the Vimeo icon on the bottom. 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.