MCP server

InboxGuards Email Check

com.inboxguardstest.api/email

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

Check emails before you send, and get a $1 SPF/DKIM/DMARC fix plan for your domain. Pay per call.

Working at last checkVerified publisher: inboxguardstest.comAbout 869 tokens per request once connected4 tools

https://api.inboxguardstest.com/mcp

At a glance

Type: MCP server
Publisher: inboxguardstest.com (verified by the MCP Registry)
Status: Working at last check
Tools: 4
Token cost: About 869 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

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 https://api.inboxguardstest.com/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.email]
url = "https://api.inboxguardstest.com/mcp"

Gemini CLI

{"mcpServers":{"email":{"httpUrl":"https://api.inboxguardstest.com/mcp"}}}

Cursor

{"mcpServers":{"email":{"url":"https://api.inboxguardstest.com/mcp"}}}

VS Code

{"servers":{"email":{"type":"http","url":"https://api.inboxguardstest.com/mcp"}}}

Antigravity

agy mcp add email https://api.inboxguardstest.com/mcp

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","server_url":"https://api.inboxguardstest.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"email","server_url":"https://api.inboxguardstest.com/mcp"}

check_email_address ~284 tokens
Check one email address before you send to it: syntax, whether the domain accepts mail (MX, null MX or implicit A record), a disposable-domain flag (public CC0 list of about 9,900 domains), a role-account flag (info@, support@, noreply@...) and a free-provider flag. Returns a verdict of ok, risky or
email_fix_plan ~363 tokens
Get an email security fix plan for one domain: the exact SPF, DKIM and DMARC DNS records to publish (create / replace / keep, record name, value and why), in order, plus click-path steps for the domain's DNS host (Cloudflare, GoDaddy, Route 53, Namecheap, Squarespace/Google, Vercel and others). Read
pricing ~93 tokens
Free. Return the price of check_email_address (and of the HTTP-only email test report), the payment network (Base) and the receiving address. No input, no network request, no payment.
validate_email ~129 tokens
Free. Check the syntax of an email address offline and get the normalized address and domain, before paying for check_email_address. No DNS lookup, no network request, no payment.

Email Deliverability
Scan and fix a domain's email deliverability (SPF, DKIM, DMARC, MTA-STS, BIMI, DNS blocklists).
Pipefire email deliverability tools
Free email deliverability tools: SPF, DKIM, DMARC, blacklist and header checks, cold email scoring.
Mail Security Tools
DMARC/SPF/DKIM/MX checks, email score, 100-domain bulk score, webhook watch alerts (x402 USDC).
Getlead
Find B2B leads with verified work emails, find and verify emails, and run cold email outreach.
Powerline Email Tools
Email deliverability checks: SPF, DKIM, DMARC, BIMI, MTA-STS, blacklists, headers, spam words
Domain Mail Check
Check a domain's email DNS, whether Gmail and Outlook accept its mail, and its registration.
Email Spam Tester
Test an email before it goes out: a disposable address, 41 checks with RFC citations, a fix plan.
OrionCMD Checks
Domain threat checks, a 30-day domain watch, TLS/DNS/email-auth checks and a $2 site audit (x402).

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