I have no Facebook account. Without ever going on their site, I received an email similar to the following:
You have almost completed the registration process. Confirm your account. You might be asked to insert this confirmation code. XXXX Didn't you created an account on Facebook? Let us know.
The let-us-know-link is (obfuscating some numbers and my mail):
which seems a valid one.
Before I could even see this message my mail is full of friends request forwarded by Facebook.
Everyone can register me using my address, but why Facebook is sending friends request before me accepting the registration? Do you know if this is the actual policy? (If not, someone hacked my mail password).
Can you tell me what happens if I click on the mentioned "let-us-know-link"? E.g. will I be inserted in some marketing DB? The fact of receiving all those friend request emails, without any consent, suggests to stay far away from clicking on link that could reveal my identity to them. Now my email address is a possible invalid one, by answering I will be in their DB with a valid mail.
If I had an account I would ask them, but I don't have and don't want to have it.