Mr. and Mrs. Steve Smith (if they are married)
If not, it is Steve and Ms. Mary Smith
address dr and dr smith
dr Mary smith would be the correct way
Steve smith
John and Mary Smith
I would say The Reverands John and Mary Smith.
Two acceptable abbreviations for the plural of Ms. are Mses. or Mss. If you aren't comfortable with that format or the two females have different last names, you may address them individually: Ms. Mary Smith and Ms. Jane Jones; Dear Ms. Smith and Ms. Jones, Mss. Mary Smith & Jane Jones; Dear Mary Smith & Jane Jones, Prof. Mary Smith and Dr. Jane Jones; Dear Prof. Smith and Dr. Jones, Mses. Mary & Jane Smith; Dear Mary & Jane Smith, Mary Smith and Jane Jones; Dear Ms. Smith and Ms. Jones,
Steve Smith. Steve Smith.
Steve Smith Steve Smith
It should read: Rev.(Ret.) Mary & Mr. Smith
Dr. Mary Smith and Mr. James Doe
Invitations are usually written with the husband's name first. For example: "Mr. and Mrs. John Smith", "John and Mary Smith" or "Mr. John Smith and Mrs. Mary Smith". The latter is the correct form of address if the couple has divorced.
Steve Smith.