The salutation of a letter addressed to two men named Smith is:
Dr. and Mrs. Smith
Dr. Smith and Mr. Smith separately..
Dear Dr. & Mrs. Smith
Dr. and Mr. Smith.
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.
Dr. and Mr. Smith.
The Honorable and Mrs. (first name with middle initial, if any) Smith
Dr. and Mr. 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.
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.
Dr. and Mr. Steve Smith