postbox-tools

endpoint

https://mcp.postboxservices.com/mcp

protocol

streamable-http ·2025-06-18

authentication

none observed

public key

none — nobody has proven they own this listing · is it yours? claim it

karma

0 · newcomer

Is postbox-tools live?

Yes — it answered the hub's last check (checked 3h ago). It answered 100% of checks over the last 30 days.

Is postbox-tools free to use?

Yes — the hub reached it with no key and no payment.

What tools does postbox-tools have?

10 tools: create_mailtest, get_domain_age, check_ai_discoverability, check_bimi, trace_redirect, analyze_eml, whois_lookup, check_spoofability, ….

Is postbox-tools safe to connect?

The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

• create_mailtest changes data unknown never probed

  Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, Gmail/Yahoo bulk-sender compliance). The USER must then send an email from the system they want to test to the returned address, after which get_mailtest_result returns the score.

  mcp-tool

  12345

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "properties": {}
  }

  arguments 5 lines copy
• get_domain_age reads unknown 13h ago

  Get a domain's registration date and age (young domains have weak sending reputation).

  mcp-tool

  1234567891011121314

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "domain"
    ],
    "properties": {
      "domain": {
        "type": "string",
        "description": "Domain, e.g. example.com"
      }
    },
    "additionalProperties": false
  }

  arguments 14 lines copy
• check_ai_discoverability unknown 3h ago

  Grade how discoverable a website is to AI answer engines (ChatGPT search, Perplexity, Claude, Google AI Overviews, Copilot and others) from its public files: robots.txt access for each major AI crawler (answer-engine vs training), sitemap.xml, plus llms.txt and ai.txt as informational signals. Returns an A-F grade, per-crawler access and findings.

  mcp-tool

  1234567891011121314

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "domain"
    ],
    "properties": {
      "domain": {
        "type": "string",
        "description": "Website domain to grade, e.g. example.com"
      }
    },
    "additionalProperties": false
  }

  arguments 14 lines copy
• check_bimi unknown 3h ago

  Check a domain's BIMI setup: looks up the default._bimi TXT record, fetches the logo it points to (l=) and validates the SVG against the BIMI SVG Tiny Portable/Secure profile, and reports whether a certificate (a=, VMC or CMC) is referenced. Does not verify the certificate itself or the DMARC policy (BIMI also needs DMARC at enforcement - use check_spoofability for that).

  mcp-tool

  1234567891011121314

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "domain"
    ],
    "properties": {
      "domain": {
        "type": "string",
        "description": "Domain to check, e.g. example.com"
      }
    },
    "additionalProperties": false
  }

  arguments 14 lines copy
• trace_redirect reads unknown 3h ago

  Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags (cross-domain jumps, https downgrades, meta/JS redirects). Fetching is SSRF-hardened (private ranges blocked, HTTPS-only, per-hop validation); how it works: https://redirect.postboxservices.com/

  mcp-tool

  1234567891011121314

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "url"
    ],
    "properties": {
      "url": {
        "type": "string",
        "description": "Absolute http:// or https:// URL to trace"
      }
    },
    "additionalProperties": false
  }

  arguments 14 lines copy
• analyze_eml reads unknown 18h ago

  Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and reverse-DNS cannot be verified from a file - for the authoritative score use create_mailtest instead.

  mcp-tool

  1234567891011121314

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "eml"
    ],
    "properties": {
      "eml": {
        "type": "string",
        "description": "The complete raw email source (headers + body), as exported via \"Show original\" / \"Download message\""
      }
    },
    "additionalProperties": false
  }

  arguments 14 lines copy
• whois_lookup reads unknown 18h ago

  WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags.

  mcp-tool

  1234567891011121314

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "domain"
    ],
    "properties": {
      "domain": {
        "type": "string",
        "description": "Domain, e.g. example.com"
      }
    },
    "additionalProperties": false
  }

  arguments 14 lines copy
• check_spoofability reads unknown 13h ago

  Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domains). Returns an A-F grade with findings.

  mcp-tool

  1234567891011121314

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "domain"
    ],
    "properties": {
      "domain": {
        "type": "string",
        "description": "Domain to grade, e.g. example.com"
      }
    },
    "additionalProperties": false
  }

  arguments 14 lines copy
• check_blacklist reads unknown 18h ago

  Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda and SpamCop. Checks the exact target given: domains are not resolved to IPs. Returns per-list listing status.

  mcp-tool

  1234567891011121314

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "target"
    ],
    "properties": {
      "target": {
        "type": "string",
        "description": "IPv4 address (checked against IP blacklists) or domain (checked against domain blacklists)"
      }
    },
    "additionalProperties": false
  }

  arguments 14 lines copy
• get_mailtest_result reads unknown 13h ago

  Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address.

  mcp-tool

  1234567891011121314

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "id"
    ],
    "properties": {
      "id": {
        "type": "string",
        "description": "The test id returned by create_mailtest"
      }
    },
    "additionalProperties": false
  }

  arguments 14 lines copy

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

1 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.