Inbox Check — Email Deliverability Test MCP Server

Email inbox placement tests across Gmail, Outlook, Yahoo, Mail.ru, Yandex (SPF/DKIM/DMARC).

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What is the Inbox Check — Email Deliverability Test MCP Server?

Email inbox placement tests across Gmail, Outlook, Yahoo, Mail.ru, Yandex (SPF/DKIM/DMARC).

What it actually does

Plug real inbox-placement testing into Claude Desktop, Cursor, Windsurf, Cline, or any other MCP-compatible AI client. The server wraps the Inbox Check REST API and exposes 5 tools your agent can call directly — create a test, send your email to the returned seed addresses, and read back per-provider placement (Inbox / Spam / Promotions / Updates), authentication results (SPF, DKIM, DMARC), headers, and screenshots.

  • 9 real provider mailboxes — — Gmail, Outlook, Yahoo, iCloud, AOL, GMX,
  • Authentication verification — — SPF, DKIM, DMARC alignment reported
  • Folder detection — — Inbox, Spam, Promotions, Updates, Social,
  • Screenshots — — rendered inbox/spam list view for Gmail, Outlook
  • No flaky scraping — — the service runs its own seed mailboxes; your
  • Built for AI agents — — strict JSON schema via Zod, deterministic

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

How to install the Inbox Check — Email Deliverability Test MCP Server

claude mcp add inbox-check --env INBOX_CHECK_API_KEY=your-value --env INBOX_CHECK_BASE_URL=your-value -- npx -y ldm-inbox-check-mcp

Configuration

VariableDescriptionRequired
INBOX_CHECK_API_KEYCredential the server authenticates with.Yes
INBOX_CHECK_BASE_URLEndpoint or connection string the server talks to.Yes

Example prompts to try

  • “Use Inbox Check — Email Deliverability Test to Cursor.”
  • “Use Inbox Check — Email Deliverability Test to Windsurf.”

Frequently asked questions

Email inbox placement tests across Gmail, Outlook, Yahoo, Mail.ru, Yandex (SPF/DKIM/DMARC). Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.