When I begin to type a name into the "TO" list names appear that are not in my Contacts list. In a couple of cases, the name that appears is also in my Contacts list but with a different email address. That leads to problems when a personal email is misaddressed.

Example:  My own Contact list = a person's private email but the 2nd email address that shows up = the person's work email. I need to eliminate the second email addresses  that I don't want.