"The honorable John Smith and Dr. Smith" is the format that should be used.
Dear Mr. John and Rev. Sally Smith,
There is no general or standard salutation for an individual with a masters degree, like you would have with a doctorate degree. In other words, Dr. John Smith.
What is the proper salutation for a register of wills, e.g. Honorable John White?
I'm so, so tempted to make a witty answer. But the correct salutation is their first and last name with MBA following their name (ie. John Smith, MBA).
Mr. John Doe and Ms. Mary Smith
The proper written salutation for addressing a sir is "Dear Sir." This is a formal greeting used in letters or emails when you do not know the individual's name. If you are addressing someone with a specific title, such as "Sir John Smith," you would write "Dear Sir John." Always follow the salutation with a comma or a colon, depending on the level of formality.
The correct salutation for man and wife that are doctors is: Dr. Henry & Dr. Judith Smith or, Doctors Henry & Judith Smith. Both are acceptable. The proper salutation for married doctors would be 'doctor'. However, you also can refer to a married doctor as Mrs. and/or Mr.
The salutation used for the envelope address can be either Dr. John Smith and Dr. Jane Smith, or Drs. John and Jane Smith. If you are writing a letter to both doctors, then he greeting in your letter can be Dear Drs. Smith.
good Morning John
The envelope would be addressed as: The Honorable John Smith United States Senate Washington D. C. 20515 In letter: Dear Senator, or Dear Senator Smith
The Revds John and Mary Smith