Mr. John Doe and Ms. Jane Smith
Mr. John Doe and Ms. Jane Smith-Doe
Either way, if the wife has a different last name than the husband, always use Ms. instead of Mrs. If it is an informal event it is appropriate to leave out the Mr. and Ms. entirely.
Mr. John Doe & Dr. Mary Smith (or the reverse, depending on priority re content)
The correct way to address an envelope to a married couple that have different last names is to use both of their names. For example, you could write Mr. Johnson and Miss or Ms. Dwyer.
When addressing a business envelope where the husband is Mr. and the wife is Dr., the proper way to format the names is to list the titles in alphabetical order. Therefore, you would address the envelope as "Dr. and Mr. [Last Name]." For example: "Dr. and Mr. Smith." This shows respect for both titles.
You can address it: John Doe and Jane Smith Street Address City, State, zip code
Addressing a husband and wife who are both Reverends: Reverends John & Jane Doe.
When addressing an envelope to a female pastor and her husband, you would typically write her name first, followed by her title. For example: "Rev. Jane Smith and Mr. John Smith." If you prefer a more formal approach, you can use "The Reverend Jane Smith and Mr. John Smith." Be sure to include their full names and any relevant honorifics, and place their names centered on the envelope.
I am fairly certain that you would address the letter by listing the names alphabetically on separate lines on the envelope, and then follow with the address. Example: Mr. John Jones Mrs. Jane Smith 200 Nowhere Lane Anyplace, State 00000-0000 It is handled differently if one of the individuals has a title (such as a doctor)...but, I can't remember the rule for that one.
You can address it to only one, or address it to both using both names. Either way is acceptable.
If you know the name of the husband, it is proper etiquette to address the mailing envelope to "Mr. and Mrs. [his name here]". On the inner envelope the addressing can be much more informal, with a simple "John and Jane", etc.Another PerspectiveThis is the twenty first century. Women have names and an existence apart from their husbands. An invitation can be addressed to Margaret and William Anderson. Most etiquette books are decades behind the times.
To address an envelope to two single sisters living together, you can write their names on the front in this format: "Ms. Jane Smith and Ms. Emily Smith." Place their names on separate lines if you prefer, or you can also write it as "Jane Smith and Emily Smith." Be sure to include their shared address below their names.
With their names and the address. Ms. Jane Hope and Ms. Marie Faith OR Jane Hope and Marie Faith
Assuming a business letter to husband and wife with different last names who you don't know the proper business salutation is to have the the wife's name first before the husband's accompanied by the proper titles. For example: Dear Mrs. Thompson and Mr. Jones, (salutation on letter) Mrs. Susan Thompson and Mr. Jeremy Jones (address on envelope and letter) Note that you could use "Ms." instead of "Mrs." if you prefer, although I recommend that since in this example you know they are married I would choose "Mrs." Jim Lumley jimlumley@live.com