206 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.
Change watch for is email hosted by migadu: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that chang...
Change watch for is email hosted by runbox: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that chang...
Change watch for is email hosted by kolab: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that change...
Change watch for is email hosted by one com: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that chan...
Change watch for is email hosted by biglobe: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that chan...
Email validation: syntax, domain MX records and disposable-domain flag. Sends no email; the address is not stored.
Resolve DNS records over DNS-over-HTTPS: A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV, PTR and more. Returns parsed answers with TTLs and the response status. Built for agents checking mail routing, domain config, or propa...
Detect which email service a domain uses (Google Workspace, Microsoft 365, Zoho, Proton, OVH, IONOS...) from its MX and SPF records, plus corporate spam filters and other senders. For B2B sales and audits.
Check an email address before sending: RFC syntax and normalisation, live DNS (domain exists, MX records, accepts mail, null MX), disposable/throwaway domain and role-account (info@, support@) flags. No SMTP probing. For...
Check the TLS certificate a domain serves on port 443: whether it chains to a trusted root, matches the name (RFC 9525) and when it expires, with issuer, chain, key and signature algorithm, TLS version and coded findings...
Online-shop trust evidence before buying: cautious score, risk flags and gaps; no safety guarantee or purchase authorization. $0.005 after shared free calls. x402 API endpoints: x402_merchant_trust_check. B2B procurement...
A record of mx.<domain>: looks up the mx host under the domain you give (A via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like mx without enumerating subdom...
AAAA record of mx.<domain>: looks up the mx host under the domain you give (AAAA via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like mx without enumerating...
TXT record of mx.<domain>: looks up the mx host under the domain you give (TXT via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like mx without enumerating su...
DKIM public key for selector "mx" of a domain: looks up mx._domainkey.<domain> (TXT, Cloudflare DoH) and parses v=, k=, key type, public-key length, testing flag and whether the key is revoked (empty p=). Confirms that m...
About the .mx top-level domain: registry operator, type (generic, country-code, sponsored), IANA/RDAP details, WHOIS server, creation date, DNSSEC signing status and the registry's nameservers. Registration research and...
Is the domain's email hosted by microsoft 365? Looks up the MX records (Cloudflare DoH) and matches them against microsoft-365's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detecti...
Is the domain's email hosted by zoho mail? Looks up the MX records (Cloudflare DoH) and matches them against zoho-mail's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for d...
Is the domain's email hosted by proton mail? Looks up the MX records (Cloudflare DoH) and matches them against proton-mail's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection f...
Is the domain's email hosted by fastmail? Looks up the MX records (Cloudflare DoH) and matches them against fastmail's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for del...
Is the domain's email hosted by icloud? Looks up the MX records (Cloudflare DoH) and matches them against icloud's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for deliver...
Is the domain's email hosted by yahoo mail? Looks up the MX records (Cloudflare DoH) and matches them against yahoo-mail's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for...
Is the domain's email hosted by aol? Looks up the MX records (Cloudflare DoH) and matches them against aol's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for deliverabilit...
Is the domain's email hosted by gmx? Looks up the MX records (Cloudflare DoH) and matches them against gmx's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for deliverabilit...