Once I have connected My Passport to my MacBook Pro and have formatted it for Mac, what is the path/steps to get to the Backup Plan creation page?
You can backup use the Time Machine Application of MAC to perform the automatic backup on the drive. For More information about Time Machine Backup, You can refer to the link given below.
You can get assistance from WD Support team from the links given below.
To Contact WD for Technical Support
The link below will allow you to call support.
Does automatic backup save all emails?
if the emails including the attachment already download in to your hard drive, yes it will backup that too.