3 ms·
not OP, but I imagine it might be one of: it's valuable (sellable) information, fraud is more likely to come from anonymous/disposable email address sign-ups fo
by herghost 8y ago
not OP, but I imagine it might be one of: it's valuable (sellable) information, fraud is more likely to come from anonymous/disposable email address sign-ups for services, tracking is more valuable when tied to a (semi-) verified/verifiable identity, valid email addresses can be enriched via other sources of information people might have access to?