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
The proper way to address a letter to a married couple with a suffix at the end of the name is to adopt the traditional rule of keeping the man's first and last name together. Mary and John Smith This is the proper way to address a married couple when using this format. So it follows that: Mary and John Smith Jr. Mary and John Smith III Mary and John Smith, Esq. would also be the proper outline.
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.