I don't understand, Stack Exchange is a huge, spam-less site.

On the major part of the sites (not Stack Overflow though) anyone can post a question as a "guest" by just typing any email:

By allowing fake email registration there will be a huge increase in spam generated here. So why does Stack Exchange still allow fake email for registration?

closed as unclear what you're asking by Patrick Hofman, Werner, Undo, Wrzlprmft, PolyGeo Dec 13 '15 at 8:43

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    Define "fake email". How do you expect us to detect an email address is fake? – Oded Dec 11 '15 at 10:47
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    Additionally, given how well the community moderates content, can you explain what problem would be solved by disallowing such emails for registration? – Oded Dec 11 '15 at 10:48
  • @Oded Ask pcloud admins how to detect fake email?, they don't allow fake email while registration. – Kiki Grimes Dec 11 '15 at 10:50
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    You brought it up, so I am asking you ;) - but the main question I have, was not answered: what problem would this solve? What problem are you seeing with fake emails for registrations that you think disallowing them would solve? – Oded Dec 11 '15 at 10:53
  • @Oded spam problems will get solved, i already mentioned in the question. – Kiki Grimes Dec 11 '15 at 10:55
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    Um. What spam problems? Our spam is taken care of pretty quickly by the community. As you noted the sites are "spam less". – Oded Dec 11 '15 at 10:56
  • stackoverflow.com/a/201378/458741; tl;dr it's impossible to "validate" an e-mail address in code. More generally, it's impossible to validate something that exists without actually checking that it exists. – ben is uǝq backwards Dec 11 '15 at 13:23
  • @Oded "How do you expect us to detect an email address is fake": By confirming the email address is valid as part of the registration process (like many other websites do as part of their registration process) - send a confirmation email and require verification. – DavidPostill Dec 11 '15 at 15:04
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    @DavidPostill - doesn't really work all that well when we support OpenId. We do the confirmation dance with the Stack Exchange OpenId provider though. Still - my main point issue is that the OP is asking us to solve a problem we don't have because other people do have it. – Oded Dec 11 '15 at 15:08
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    In your question you state that the sites spam-less and then you tell there is a problem? I don't follow you. What is the problem you are trying to fix? – Patrick Hofman Dec 12 '15 at 17:52
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    This makes sense. When you take away being able to register from spammer-liked emails such as Gmail, Yahoo, AOL and Hotmail, only spammers will have email addresses from those domains – random Dec 12 '15 at 18:05

What you actually suggest here is that Stack Overflow will require the user to verify the email before he/she can post.

This is just an extra step that will make it harder for ordinary people to post, while not making the spammers' life even a bit harder. I'm 100% sure they can use, and are using, real email addresses and can verify them just as any other (real) user.

All in all, just a pointless barrier that should not exist in the first place, and I'm glad it really doesn't exist.

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