MCP server

Email Check

ai.kaiv/email-check

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Email posture for any domain: can it receive mail, can it be spoofed? MX, SPF and DMARC.

At a glance

Type

MCP server

Publisher

kaiv.ai (verified by the MCP Registry)

Status

Working at last check

Tools

4

Token cost

About 831 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http email-check https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.email-check]
url = "https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250"

Gemini CLI

{"mcpServers":{"email-check":{"httpUrl":"https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250"}}}

Cursor

{"mcpServers":{"email-check":{"url":"https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250"}}}

VS Code

{"servers":{"email-check":{"type":"http","url":"https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250"}}}

Antigravity

agy mcp add email-check https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"email-check","server_url":"https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"email-check","server_url":"https://api.kaiv.ai/api/bridge/mcp/email-check-b6ab5250"}

Tools

• check_email_domain ~233 tokens
  Full 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 unfamil
• get_dmarc_record ~245 tokens
  DMARC 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 r
• get_mx_records ~167 tokens
  Mail 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_record ~186 tokens
  SPF 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

Browse

• Email

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