The correct way to greet a member of the Royal Family is to wait for them to offer their hand for a handshake. 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. The letter should begin 'Sir' or 'May it please Your Majesty'. Sample Sentences for Step 1. Here are 10 things your welcome letter or email to new members must include plus a template that can be customized for your organization. "Congratulations on your welldeserved success. We shall send off these letters in a few days. The Prime Minister; the Governor-General; His Majesty The King. Cards for this period will be posted out in advance and any applications made whilst the office is closed will be processed from 2nd January.