Paid services matching “mx”

DNS and email-authentication audit for one domain: A/AAAA presence, NS count and whether the nameservers share a /24, MX (including a null MX), SPF (missing, multiple, +all, ~all, ?all), DMARC (missing, p=none, no rua, partial pct), a DKIM selector probe, CAA, and whether the zone is DNSSEC-signed. Read entirely over DNS-over-HTTPS, so nothing is sent to the target host. Every finding carries a st

DNS and email-authentication audit for one domain: A/AAAA presence, NS count and whether the nameservers share a /24, MX (including a null MX), SPF (missing, multiple, +all, ~all, ?all), DMARC (missing, p=none, no rua, partial pct), a DKIM selector probe, CAA, and whether the zone is DNSSEC-signed. Read entirely over DNS-over-HTTPS, so nothing is sent to the target host. Every finding carries a st

Domain intelligence in one call: DNS records (A, AAAA, MX, TXT, NS, CNAME), WHOIS via RDAP (registrar, created, expires, status), and live SSL certificate (issuer, validity, expiry). $0.005 per call. No account or API key needed.

Checks one email address and returns valid, risky or invalid with the reasons: address format, whether the domain can receive mail (live MX lookup), known throwaway domains (mailinator and others, invalid), shared inboxes like info@ or sales@ (risky), likely typos such as gmial.com with the fix in didYouMean, and free providers such as gmail.com (flag only). Does not ping the mailbox (no SMTP), so

Central-bank policy rates, VAT/GST rates and thresholds, statutory interest and minimum wages for 22 Latin American countries including Brazil, Mexico, Argentina, Chile; also CPI, income, corporate and withholding tax, social contributions, holidays. Official central-bank FX reference rates for BR, CO, MX, PE. JSON with value, unit, effective date, official source URL and last_confirmed; a country

Central-bank policy rates, VAT/GST rates and thresholds, statutory interest and minimum wages for 10 North American countries including United States, Canada, Mexico; also CPI, income, corporate and withholding tax, social contributions, holidays. Official central-bank FX reference rates for CA, MX, US. JSON with value, unit, effective date, official source URL and last_confirmed; a country with n

Live DNS records for a host name, with TTLs and whether the answers validated under DNSSEC. ?type= takes a comma-separated list of A, AAAA, CNAME, MX, TXT, NS, SOA, CAA.

Email validation for signup forms, lead lists and CRM cleanup: checks syntax, MX mail servers, disposable or temporary domains, role addresses (info@, sales@) and free providers. Returns a deliverable_guess. No SMTP probe, no data stored.

Unfold a domain's SPF policy (RFC 7208) into merged IPv4 and IPv6 blocks: include and redirect followed as a receiver counts them (10 lookups, 2 void lookups, PermError stops), a and mx resolved with /cidr, sources per block, exists, ptr and macros listed apart, and very broad blocks flagged. Use when an agent must know which servers may send. Input: ?domain=example.com.

Validate email syntax, domain, and MX records for basic automated checks without SMTP mailbox verification; cannot prove a mailbox exists or can receive mail. USE WHEN: agent needs inexpensive structural and mail-domain validation before using an email address. DO NOT USE WHEN: agent requires proof that a mailbox exists or can receive mail.

Validates one email (email=) or up to 50 (emails=comma list, same price): RFC 5322 syntax, normalized form, MX records (A fallback), disposable, role account, free provider, typo suggestion, and a deliverable/risky/undeliverable verdict with reasons. No SMTP probing.

Check whether a domain or email address is trustworthy before you contact it, sign it up, or trust it. Returns a trusted/caution/high_risk/unknown verdict with reasons, based on DNS and mail health (MX, SPF, DMARC), domain age and registrar (RDAP), and disposable, free-provider and typo-lookalike flags. Accepts a domain, URL or email address.

Agent intents: verify signup email · is disposable? · check DMARC before outreach · role-account risk. One call returns syntax, MX, SPF, DKIM, DMARC, disposable, role, provider, score 0-100, light domain enrichment, and recommend accept|challenge|reject with reasons. Production 0.10 USDC; demo free rate-limited. x402 on Base for AI agents.

Mail Security Tools API: Prepaid email setup watch: up to 25 domains for 30 days, webhook on change. Pay once, then each domain's SPF, DMARC, DKIM (common selectors), MX and score are re-checked about once a day for 30 days. When something changes or breaks you get an HMAC-signed JSON POST at your https webhook_url (event watch.changed, kind changed|broke, before/after). A watch.created POST is se

Domain and email security check: SPF, DKIM, DMARC, MX, MTA-STS, TLS-RPT, DNSSEC (validated by Cloudflare and Google), CAA, BIMI with its mark certificate, mail IPs on the UCEPROTECT Level 1 blocklist, TLS certificate, registrar and domain age, and Microsoft 365 tenant, each graded with the exact record to fix it, plus a 0-100 score

Verify a single email: syntax, MX records, SMTP RCPT probe, catch-all, disposable, role-based, free-provider, typo suggestion, 0-100 score, and verdict.

Email authentication posture check: parses SPF, DMARC and DKIM plus MX for any domain and grades deliverability/anti-spoofing gaps (SPF +all, SPF >10 lookups, DMARC p=none, missing DKIM). Clean JSON for deliverability and security-ops automation.

Look up a domain: registration data from RDAP (registrar, created, expires, status, nameservers), live DNS records (A, AAAA, MX, NS, TXT, CNAME), the TLS certificate served at the name (issuer, validity, alternative names, fingerprint), and the HTTP front door (status, server, redirect). One JSON answer, no API key, no rate-limited WHOIS. GET with ?name= or POST. $0.005.

InboxGuards Email Test: Email security fix plan: the exact SPF, DKIM and DMARC records to publish, with steps for your DNS host. Reads the domain's live MX, NS, SPF, DKIM and DMARC records, detects the mailbox provider and DNS host, and returns the exact records to publish in order (create / replace / keep, name, value, why): one merged SPF within the 10-lookup limit, DKIM records or the provider

Send up to 10 domain names and get back every DNS record type (A, AAAA, MX, CNAME, TXT, NS, PTR, SOA, SRV, CAA, NAPTR, DS, TLSA) plus the full WHOIS registration profile (registrar, dates, contacts, status, nameservers) for each one. URLs are accepted and automatically stripped down to the bare domain. Duplicate domains are quietly removed before processing. Results come back as one flat row per d

Assess how trustworthy a domain is using authoritative live signals, not just its spelling. Fuses RDAP registration data (domain age — the single strongest phishing signal — plus registrar, expiry and registry status flags), DNS resolvability (A/AAAA), MX presence and DNSSEC into a 0-100 risk score with a verdict (low/medium/high) and the exact reasons. Pairs with `urltrust` (lexical) for a comple

6 email validation checks in one call — syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confidence score with detailed per-check results. POST method protects email addresses from access logs. No API keys, no multiple service integrations needed. Accepts

Evaluate an SPF record against an IPv4/IPv6 address using only its literal ip4/ip6/all mechanisms. DNS-dependent mechanisms (include, a, mx, exists, redirect) reached before a match yield an honest `indeterminate` result rather than a guess.

Look up DNS records (A, AAAA, CNAME, MX, NS, TXT, CAA) over DNS-over-HTTPS

Domain intelligence in one call: RDAP registration (registrar, created, expires, age, status, nameservers), DNS records (A, AAAA, MX, NS, TXT, CNAME, SPF, DMARC), a live HTTPS probe (reachable, status, server, redirect target, HSTS), plus risk flags and a 0-100 risk score for new, parked, unreachable or badly configured domains.

Validate an email address: format check plus a live MX record lookup on its domain

Company domain intelligence. Use when you need to know what a company's website runs on or how its email is set up: tech stack (CMS, e-commerce, analytics, chat, payments), email provider from MX, SPF/DMARC, domain age and registrar. No personal data.

Company enrichment from domain — composite domain dossier: RDAP registration + DNS infrastructure signals, tech-stack detection, likely corporate email patterns + MX verification, and SSL/TLS certificate health for one domain, fused into a single response with an aggregated signals list. Lead data for B2B prospecting. One domain per call. Tiger Operations. Use when vetting a company or domain and

Check an email address or domain: MX records, mail provider (Google/Microsoft/Zoho), SPF, DMARC policy, disposable-domain flag and a 0-100 deliverability score. Validate leads before sending.

Domain-level contact preflight with MX provider, SPF, DMARC and structured risk signals. Does not claim mailbox existence.