DMARC/SPF/DKIM/MX checks, email score, 100-domain bulk score, webhook watch alerts (x402 USDC).
Connect Remote server
claude mcp add --transport http email-security https://api.mailsecuritytools.com/mcp
{
"mcpServers": {
"email-security": {
"url": "https://api.mailsecuritytools.com/mcp"
}
}
}
{
"servers": {
"email-security": {
"type": "http",
"url": "https://api.mailsecuritytools.com/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://api.mailsecuritytools.com/mcp
Tools 8 found in our last check
check_domain_email_securityFree. Look up a domain's MX, SPF (record, DNS lookup count, all qualifier), DMARC (policy, rua) and DKIM (common selectors, key size) from live DNS and list issues. No payment.
pricingFree. Prices of the paid tools, payment network and receiving address.
email_security_scoreGrade a domain's email security 0-100 (A-F): SPF 30, DMARC 40, DKIM 25, MX 5, from live DNS, with findings and the top 3 fixes. Read-only. Costs $0.01 USDC via x402; errors are not charged.
check_email_addressCheck one email address: syntax, MX / null MX, disposable domain, role account, free provider; verdict ok / risky / undeliverable. No SMTP probe. Costs $0.01 USDC via x402; errors are not charged.
email_fix_planEmail security fix plan for one domain: the exact SPF, DKIM and DMARC records to publish (create / replace / keep, name, value, why), in order, with click-path steps for the domain's DNS host and a staged DMARC rollout. Non-sending domains get a lock-down set. Costs $1 USDC via…
bulk_email_security_scoreScore up to 100 domains' email security in one call (SPF 30, DMARC 40, DKIM 25, MX 5 from live DNS): per-domain score, grade and issues, plus a summary with grade counts, domains missing DMARC or SPF, and the worst 10. For MSPs and agents checking a client or vendor list. Costs…
email_security_score_batchScore 2 to 5 domains' email security in one call (the same SPF/DMARC/DKIM/MX score, grade and findings as email_security_score), lowest score first. Costs $0.04 USDC via x402; if no domain can be scored it errors and is not charged.
watch_statusFree. Status of a paid email setup watch (created with POST /v1/watch): items, expiry, last check, last webhook delivery and current SPF/DMARC/DKIM/MX state. Needs the webhook_secret from creation.
Details
| Endpoint | https://api.mailsecuritytools.com/mcp (Streamable HTTP) |
| First published | 15 Oct 2026 |
| Last updated | 15 Oct 2026 |
| Registry name | com.mailsecuritytools.api/email-security |
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