The proper way to address that letter would be "Mr. and Mrs. John Doe."
The proper way address them is Mr. or Mrs Last Name
Just by Mr & Mrs , or by their professional titles , if any.
The correct way to address a gift is "Mr. & Mrs. James Smith". The couple is already married so it is proper to address it this way.
"Mr. & Mrs. C. Smith" if you know his first initial. If not, then "Mr. & Mrs. Smith" would be correct.
Say there last name was "Smith" you would write Mr. and Mrs. Smith.
The name followed by Jr For example: John Doe Jr
What is the proper salutations for Dr. & Dr. Odie McKeaigg? If you are in Oklahoma, the proper way to address them is: "Hey punk (Odie) and Doctor Mckeaigg, How are you?"
Proper old wold style is to say: Mr. and Mrs. (man's first name)(married last name) new acccepted standard is: Mr. and Mrs. (married last name)
Mrs. Greta & Mr. Neal Featherston, Jr.
The customary way is to address it as "Mr. and Mrs. Smith & Family".
Says the important that you want to say