Here are 10 things your welcome letter or email to new members must include plus a template that can be customized for your organization. Greeting letters recognize special events held in Washington.Office of Documents and Administrative Issuances - 899 North Capitol Street, NE, Suite 8700, Washington, DC 20002. 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. Looking for unique and personalized ways to say "letter greetings"? Please save the enclosed reminder card and make plans to join us! Trying to write a membership renewal letter but don't know where to start? Therefore, you need to reference both the member of Congress and the Governor in your response letter. "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide.