Task

Email Check

3 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

Agent Email Check x402 REST usage

DNS and list based verification. Never claims that a mailbox exists without evidence: without an SMTP probe the verdict for a routable address is "unknown", not "valid".

mailcheck.netzhandwerker.de Comms & Messaging 2 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Agent Email Check x402 REST usage

DNS and list based verification. Never claims that a mailbox exists without evidence: without an SMTP probe the verdict for a routable address is "unknown", not "valid".

mail.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-10-26

0.001 USDC per call per call

x402broker-email-check x402 REST

X402-Broker MX, Deliverability & Disposable Email Verifier: Verifies email deliverability, MX records, catch-all status, and disposable domains.

x402broker.com Crypto & Payments checked 2026-10-26

0 USDC per call per call

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