什么是 EmailShield？
EmailShield is an email verification and deliverability platform that guarantees 99.8% verified accuracy through real SMTP handshakes - not DNS-only lookups used by legacy tools. Multi-step verification includes syntax checks, MX record validation, and real-time mailbox existence confirmation without sending actual emails. Bulk processing handles up to 100,000 emails per minute. The platform runs on self-hosted proxy infrastructure with zero third-party dependencies and rotating egress IPs.
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