Postbox Services: Email Deliverability & Security Tools
Your AI can run real email deliverability and security checks on demand.
Ask the questions people actually type (about blacklists, email spam tests, link tracing) and get answers from a live check, each with a link to the full report:
MCP connector
- Server URL
https://mcp.postboxservices.com/mcp- Login
- None
- Protocol
- MCP 2025-11-25
- Instructions
Free email deliverability and security checks by Postbox Services: check whether a domain or IP is on an email blacklist (DNSBL), grade a domain's spoofing/BEC exposure (SPF, DKIM, DMARC), trace a URL's redirect chain, run a full deliverability/spam test on a real message, analyze a raw .eml, and look up domain age and WHOIS. Each tool checks the exact target given and returns structured results plus a link to the full web report.
Tools
Reads data7
Changes data1
Skills
None in the store listings or on the server
Ahrefs#65