Meta's Contact Removal Tool

[Meta has a tool to look for and remove contact information.](https://www.facebook.com/contacts/removal). I checked an email address I care less about and it is there, because someone uploaded their contact list to Facebook. Yay.

So now they offer to delete it, but also to block it from being uploaded again. So which is worse - it is there in someone's Facebook contacts, or Meta knows that I don't like them having it? How can they use this? Do I trust that …

block contacts delete don email facebook hash meta offer privacy tool trust