Email Deliverability X402

What is Email Deliverability X402?

Email Deliverability X402 is an MCP server that audits email domain deliverability by checking SPF, DKIM, DMARC, and MX records, returning a score from 0–100. It uses pay-per-call via the x402 protocol (USDC on Base L2), with no signup, API key, or rate-limit walls. It is part of the klymax402 marketplace of micropayment APIs for AI agents.

How to use Email Deliverability X402?

Configure the server in your MCP client (e.g., Claude Desktop, Cursor, ElizaOS) by adding the URL https://email-deliverability.api.klymax402.com/mcp to mcpServers. Then invoke the tool email_audit_deliverability with the required domain parameter (e.g., example.com). You can also call the HTTP endpoint directly with a curl command; any x402‑aware client handles the payment challenge automatically.

Key features of Email Deliverability X402

• Pay‑per‑call via x402 (USDC on Base L2), no signup or API key required
• Checks SPF record validity, DKIM selectors, DMARC policy, and MX records
• Returns a deliverability score 0–100 with specific recommendations
• Part of the klymax402 marketplace with 100 x402 micropayment APIs
• No rate limits – only the per‑call fee of $0.005

Use cases of Email Deliverability X402

• Audit your own domain’s email deliverability before launching a campaign
• Troubleshoot why emails from a domain are landing in spam
• Assess a partner or vendor domain’s email infrastructure readiness
• Automate deliverability checks in CI/CD pipelines for transactional emails

FAQ from Email Deliverability X402

Is this server for email validation?

No. This server audits deliverability (SPF, DKIM, DMARC, MX). Do not use it for email validation — use email_verify_address. Do not use it for email finding — use email_find_by_name.

How much does each call cost?

Each audit costs $0.005 USDC, paid via the x402 protocol on Base L2.

Do I need an API key or signup?

No. x402 handles payment upfront with no signup or API key required. Any x402‑aware client can make requests.

What domain format does the domain parameter accept?

A string like example.com or gmail.com. The domain is required for every audit call.