A letter to his most Excellent Majesty, George the third, King of Great-Britain, France, and Ireland, and Emperor of North America. 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. Boost your renewal rates with a foolproof membership renewal letter! The letter should begin 'Sir' or 'May it please Your Majesty'. We created three free templates you can use as a starting point. A lot goes into planning a special event, but the invitation letter doesn't need to add any stress. These samples can help you craft the perfect invite. May your reign be filled with joy and prosperity and may God keep you and your family in good health. Address The King properly.