Don't require an email in new Contacts
Why is an email address required for a new Contact? Many, many, many contacts we have don't have email, or at least I don't use or need their email. I store a phone number or an address or even just notes in a Contact record. STOP requiring an email address in Contacts.
BTW, you deleted all of my Contacts that didn't have emails and you have cause me HUGE problems because you wiped out a bunch of really important data for me. Yahoo really sucks now.