I find Mail holds email addresses, even incorrect ones, someplace that I cannot locate. These are not addresses in my Contacts. And, when I edit a Contact page and delete the old email, it still appears, maybe as the top (preferred) address for that person. If I forget to check EVERY TIME, I may send to the wrong email.
How to I clear the addresses in Mail so it ONLY uses the emails in my Contacts. How do I clear the old email addresses that Mail holds?