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.Examples of welcome letters​​ Hi, Alexis! We are so happy that you are finally starting your new role at our company. Here are some tips to help you craft an effective and warm welcome letter: 1. Start with a Warm Greeting 2. Send a short "Welcome to the team" message to let new employees know how excited you are to have them. Here's how to make the best first impression. Here are 10 things your welcome letter or email to new members must include plus a template that can be customized for your organization. What should a great welcome email or letter look like?