The Honorable Judge Smith and Mr. Smith for the envelope and Judge Smith and Mr Smith for the letter.
Dear Judge Smith and Mr. Smith.
Dear Judge Smith: See http://www.factmonster.com/ipka/A0771340.html for more info.
The Honorable and Mrs. (first name with middle initial, if any) Smith
The letter salutation is written as: Dear Doctor and Judge Smith. The envelope is written as: Doctor Adam Smith and the Honorable Eve Smith.
His honor or Your honor is the proper salutation for a retired judge. The use of the word judge in title and introductions is not used after retirement.
Your Honor
Retired or not, the proper formal salutation should read: Honorable Walter K Smith Dear Sir:
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 Honorable (similar to a judge)
You can greet a judge by calling him or her a judge. You can also call them Mr. or Mrs.
Your Honor is the most common address. Judge xxx is also acceptable.
Judges should be addressed, "your honor".