Email Check
Email posture for any domain: can it receive mail, can it be spoofed? MX, SPF and DMARC.
Connect it
Settings → Connectors → Add custom connector
URL: https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250Settings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250{
"mcpServers": {
"email-check": {
"url": "https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250"
}
}
}claude mcp add --transport http email-check https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250{
"servers": {
"email-check": {
"type": "http",
"url": "https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250"
}
}
}4 tools, verified live
check_email_domainread-onlyFull email posture for a domain: can it receive mail, and can it be spoofed? Runs MX, SPF and DMARC lookups together and returns a plain-language verdict alongside the raw records: can_receive_mail, spoofable, and a list of specific findings. Use this as the default check before emailing an unfamiliar domain, when judging whether inbound mail claiming to be from a domain could be forged, or when
get_dmarc_recordread-onlyDMARC record, policy, and whether it actually protects. Returns the DMARC TXT record at _dmarc.<domain>, its policy (none / quarantine / reject), the percentage it applies to, and whether that policy protects against spoofing. Also flags the case of MULTIPLE DMARC records, which RFC 7489 requires receivers to treat as no policy at all — a domain in that state is unprotected however strict its rec
get_mx_recordsread-onlyMail exchanger records for a domain. Returns the MX hosts in priority order and whether any exist. A domain with no MX records cannot receive mail, so sending to it will bounce. Use when you only need deliverability and not spoofing posture; use check_email_domain for the full picture.
get_spf_recordread-onlySPF record and how strict it is. Returns the SPF TXT record, the qualifier on its `all` mechanism (fail / softfail / neutral / pass) and what that means in practice, plus whether more than one SPF record exists — which receivers treat as an error, leaving the domain unprotected. Use when diagnosing why mail from a domain is being rejected or marked.
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