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by basil-rash 2687 days ago
To some extent, they can't. (How do you verify the email without being on the wifi?)
1 comments
dzek69 2687 days ago
some may allow popoular e-mail services (and imap/pop3 ports) traffic, while blocking the others
link
kees99 2687 days ago
other captive portals let user in, ostensibly to open inbox and click the link, then kick off the net if that didn't happen within 5 minutes.
link