Facebook API - no email in response

Question

Is it possible to register a Facebook account without being tied to this account? I ask because in some answers (1 out of 10000) I do not receive email (do I have perms = "email" in the API request)?

Does anyone have any experience with this problem? What answer do you show the user in this case?

Answer 1

email permission is not what blocks the user at the entrance to the system, after providing it can be deleted manually by the user, and he can avoid providing it in future interactions with your application / site.

At a minimum, the Facebook JavaScript SDK that conveys the user ID, even if the user skips providing email permission.

Answer 2

In fact, this is possible if the user has registered through the facebook mobile application on the phone and registered using the phone number.

Answer 3

Unable to register facebook account without email. If you have users connecting your application, but you cannot see their email address, they probably refused permission.

Answer 4

It is not possible to have a facebook account without email, but it is possible to have it with unconfirmed email, in which case it is not provided through the API: Facebook The email field returns null (even if the "email" permission is set and accepted)