Can you target a look-a-like ONLY list when using email matching for Social Media and/or Native?
Yes. Once the list is submitted, we will find the clients online. Then, once a look-a-like audience has been created, we’ll target ONLY those people.
Can Facebook share my email/phone list or use it?
No, they can't. Below is their policy on lists that we upload to use for Custom Audience matching. Below is their policy or click here: https://www.facebook.com/ads/manage/customaudiences/tos.php or download this pdf: facebook_audiences_data_security_overview