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Email address check without probing the mailbox: syntax (RFC 5321/5322, IDN/punycode), DNS-over-HTTPS MX with the A/AAAA fallback and null-MX detection, disposable-domain list (CC0 snapshot), role account, free provider, typo suggestion. Verdict valid / risky / invalid / unknown. An address that cannot be valid is answered free (HTTP 422); DNS outages are free 5xx. Checks address syntax, public DNS (MX, with the RFC 5321 A/AAAA fallback) and public lists only. The mail server and the mailbox are never contacted (no SMTP), so 'valid' means the address is well-formed at a domain that accepts mail, not that the mailbox exists or will accept this message. Not a guarantee of deliverability.
Last updated 27m ago
On-chain USDC settlements received on Base · 0xfbF7413bcB3a604936775C96FDbe0b0C9c9E37F5
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On-chain payment destinations for this service, with each wallet’s current USDC balance. Click an address to view it on the block explorer.
