A business letter to his/her place of employment should be addressed to Superintendent , to their home , as Mr. , Mrs. , or Ms. , if a social invitation.
Oh honey, if you're writing to a superintendent, you better show some respect and address them as "Superintendent." Save the casual "Mr" for your next-door neighbor. Trust me, you don't want to get on the bad side of someone who can suspend you with the snap of their fingers.
MR.
It should read: Rev.(Ret.) Mary & Mr. Smith
The envelope should read: Mr. John Doe & Dr. Jane Doe. If you don't know her first name then put: Mr. & Dr. John Doe.
Mr. & Mrs. <lastname>
* For High School Graduation invitations for couples it should be Mr. & Mrs., but, if the two people are living together you could address the envelope to: Mr. Jack Smith and Ms. Jane Doe. Even if they are younger friends or young relatives in your family there should always be a Mr. or Ms. in front of the name.
A correct way to address an envelope to Spain is: Senor (Mr.) Senora (Mrs.) or Senorita (Miss.)
The proper way to address an envelope for a Ph.D. is "Dr. [Full Name]" followed by their address.
m.et mme smith
When addressing a business envelope where the husband is Mr. and the wife is Dr., the proper way to format the names is to list the titles in alphabetical order. Therefore, you would address the envelope as "Dr. and Mr. [Last Name]." For example: "Dr. and Mr. Smith." This shows respect for both titles.
On the outer envelope it should read: PERSONAL Mr. & Mrs. John Doe c/o Zero Acme Co., 0000 Hawthorne St. San Francisco, CA ZIP CODE #
Addressing an envelop to a woman with a boyfriend and young son: Just address the envelope to: Ms. Jane Doe & Mr. John Doe (if the young son is in their teens, but not necessary if they are a minor) & Mr. John Smith. So the envelope may read: Ms. Jane Doe & Mr. John Smith.