Inbox Check — Email Deliverability Test
Run inbox placement tests across major providers and validate SPF, DKIM, and DMARC before launch or lifecycle sends.
Overview
Inbox Check is a Launch-phase MCP server that runs multi-provider inbox placement tests and SPF/DKIM/DMARC checks for outbound email via the Inbox Check API.
What is this MCP server?
- Inbox placement tests across Gmail, Outlook, Yahoo, Mail.ru, and Yandex
- SPF, DKIM, and DMARC checks in the deliverability workflow
- stdio npm package ldm-inbox-check-mcp (v0.1.2)
- INBOX_CHECK_API_KEY (Bearer, icp_live_ prefix) and optional INBOX_CHECK_BASE_URL override
- Docs: check.live-direct-marketing.online/docs/mcp
- Package version 0.1.2
- Transport: stdio
- npm identifier: ldm-inbox-check-mcp
What problem does it solve?
Launching email without knowing whether Gmail or Outlook will spam-folder your messages is an expensive guess for a one-person marketing push.
Who is it for?
Indie founders validating deliverability across major inboxes right before distribution, drips, or lifecycle campaigns.
Skip if: Projects with no outbound email, or teams that already have enterprise deliverability suites and dedicated analysts.
What do I get? / Deliverables
After adding the MCP server with INBOX_CHECK_API_KEY, your agent can order placement tests and surface authentication gaps before you send at scale.
- Cross-provider inbox placement test results via agent
- SPF, DKIM, and DMARC visibility for the sending domain
- Actionable pre-send deliverability signal before campaigns
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Journey fit
Inbox placement and authentication alignment matter right before you send launch campaigns and lifecycle email that must reach Gmail, Outlook, Yahoo, and other providers. Deliverability testing is distribution infrastructure—proving messages land in inbox not spam across major mailbox providers.
How it compares
Deliverability and placement MCP, not an inbox read/write Outlook integration.
Common Questions / FAQ
Who is inbox-check for?
Solo builders and small teams sending product, launch, or lifecycle email who want agent-driven inbox placement and SPF/DKIM/DMARC validation.
When should I use inbox-check?
Use it in launch and grow distribution prep whenever you change domains, DNS auth records, or ESP setup and need proof across Gmail, Outlook, Yahoo, and regional providers.
How do I add inbox-check to my agent?
Install ldm-inbox-check-mcp, set INBOX_CHECK_API_KEY to your icp_live_ bearer key, optionally set INBOX_CHECK_BASE_URL, add the stdio MCP config, and follow check.live-direct-marketing.online/docs/mcp.