Religious Titles-Protestant

In most protestant churches,

the minister is usually addressed as Reverend or as Doctor.  

Let's look at how envelopes to these ministers should be addressed. 

If the minister goes by Reverend and does not have a Doctorate, 

the outside envelope should be addressed:  

The Reverend and Mrs. John Smith 

The inside envelope should be addressed: 

The Reverend and Mrs. Smith

If the minister is the woman, 

the outside envelope may be addressed: 

Mr. and Mrs. John Smith

and 

Mr. and Mrs. Smith 

on the inside envelope.

OR 

the outside envelope may be addressed: 

The Reverend Mary Smith and Mr. John Smith

and

The Reverend Smith and Mr. Smith

on the inside envelope.

If the minister has a doctorate, 

the outside envelope should be addressed:  

The Reverend Doctor and Mrs. John Smith 

and 

The Reverend Doctor and Mrs. Smith 

on the inside envelope.

If the minister is the woman, 

the outside envelope may be addressed:  

Mr. and Mrs. John Smith 

and 

Mr. and Mrs. Smith 

on the inside envelope.

OR 

the outside envelope may be addressed:  

The Reverend Doctor Mary Smith and Mr. John Smith 

and 

The Reverend Doctor Smith and Mr. Smith 

on the inside envelope.

The major point...

use "The" before the minister's title!

ALSO...if any of these names are too long, 

"and" is the dividing point 

and the spouse's name should be moved to the next line.

The Reverend Doctor Mary Parker Smith

and Mr. John William Smith