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ldm-inbox-check-mcp
MCP server for [Inbox Check](https://check.live-direct-marketing.online) — programmatic email deliverability testing across 9 providers (Gmail, Outlook, Yahoo, iCloud, AOL, GMX, T-Online, Mail.ru, Yandex) for AI agents.
📦 npm · 🌐 check.live-direct-marketing.online · ✨ awesome-mcp-servers · 🔍 Glama
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.
Why use this?
- 9 real provider mailboxes — Gmail, Outlook, Yahoo, iCloud, AOL, GMX,
T-Online, Mail.ru, Yandex. Not simulations: actual IMAP-backed seed accounts, actual filter verdicts.
- Authentication verification — SPF, DKIM, DMARC alignment reported
per delivery, parsed from Authentication-Results headers.
- Folder detection — Inbox, Spam, Promotions, Updates, Social,
Forums, Category-specific tabs where providers expose them.
- Screenshots — rendered inbox/spam list view for Gmail, Outlook
and others, so the agent can show the user what the recipient sees.
- No flaky scraping — the service runs its own seed mailboxes; your
agent only talks to a stable REST API.
- Built for AI agents — strict JSON schema via Zod, deterministic
tool names, cursor pagination, idempotent keys.
What it does
Exposes 5 tools that wrap the Inbox Check REST API:
| Tool | Description |
|---|---|
inbox_check_create | Create a placement test; returns seed addresses to send your email to. |
inbox_check_status | Get per-provider placement, SPF/DKIM/DMARC, screenshots. |
inbox_check_list | List recent tests with cursor pagination. |
inbox_check_delete | Delete a test and its screenshots. |
inbox_check_me | Inspect API key metadata, features, quota usage. |
Install
npx ldm-inbox-check-mcpNo global install needed — Claude Desktop / Cursor / Windsurf / Cline will npx-run it on demand.
Get an API key
- Go to <https://check.live-direct-marketing.online/docs>.
- Contact the operator for a key (self-service issuance coming later).
- Copy the
icp_live_...string — it's shown exactly once.
Configure your MCP client
Claude Desktop
Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):
{
"mcpServers": {
"inbox-check": {
"command": "npx",
"args": ["-y", "ldm-inbox-check-mcp"],
"env": {
"INBOX_CHECK_API_KEY": "icp_live_xxxxxxxxxxxxxxxxxxxxxxxx"
}
}
}
}Cursor
~/.cursor/mcp.json:
{
"mcpServers": {
"inbox-check": {
"command": "npx",
"args": ["-y", "ldm-inbox-check-mcp"],
"env": { "INBOX_CHECK_API_KEY": "icp_live_..." }
}
}
}Windsurf
~/.codeium/windsurf/mcp_config.json:
{
"mcpServers": {
"inbox-check": {
"command": "npx",
"args": ["-y", "ldm-inbox-check-mcp"],
"env": { "INBOX_CHECK_API_KEY": "icp_live_..." }
}
}
}Cline (VS Code)
~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json (macOS) or the equivalent on your platform:
{
"mcpServers": {
"inbox-check": {
"command": "npx",
"args": ["-y", "ldm-inbox-check-mcp"],
"env": { "INBOX_CHECK_API_KEY": "icp_live_..." }
}
}
}Environment variables
| Variable | Required | Default |
|---|---|---|
INBOX_CHECK_API_KEY | yes | — |
INBOX_CHECK_BASE_URL | no | https://check.live-direct-marketing.online |
Override the base URL only for self-hosted deployments or testing.
Example prompts
"Use inbox-check to create a test against Gmail, Outlook and Yahoo, then wait 90 seconds and tell me where the email landed."
"List my last 10 inbox-check tests and summarise the spam rate per provider."
"Create a test, I'll send the email, then show me the SPF/DKIM/DMARC results and tell me which record is misaligned."
Use cases
- Cold-email warm-up QA — before a campaign, send a draft to the seed
addresses and have the agent verify Inbox placement on Gmail + Outlook.
- Authentication debugging — when a domain starts landing in Spam, ask
the agent to run a test and point to the failing SPF/DKIM/DMARC check.
- Template change review — compare placement of an old vs new email
template across 9 providers in a single agent run.
- Shared-IP reputation monitoring — schedule periodic tests and have
the agent alert when Spam rate crosses a threshold.
- Transactional mail audit — verify that password-reset / receipt
emails actually reach the Inbox (not Promotions) on every major provider.
Related
- check.live-direct-marketing.online — the hosted Inbox Check service behind this MCP server.
- live-direct-marketing/ldm-sdk-js — official TypeScript SDK + MCP server for LDM.delivery (email delivery API for AI agents).
- live-direct-marketing/awesome-email-deliverability — curated list of tools, resources, and best practices for email deliverability.
License
MIT © Live Direct Marketing