MAILTYPE — Email Domain Capability Intelligence

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Email-domain intelligence: MX capability, provider, disposable status, SPF, DMARC, and MTA-STS.

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

Remote (streamable-http)
Claude Code
claude mcp add --transport http mailtype-email-domain-capability-intelli 'https://mailtype-api.onrender.com/mcp' --header 'X-API-Key: <MAILTYPE API key>'
Configuration JSON (Claude Desktop, Cursor, VS Code)
{
    "mcpServers": {
        "mailtype-email-domain-capability-intelli": {
            "type": "http",
            "url": "https://mailtype-api.onrender.com/mcp",
            "headers": {
                "X-API-Key": "<MAILTYPE API key>"
            }
        }
    }
}

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  1. MAILTYPE
  2. What it returns
  3. Why MAILTYPE
  4. REST
  5. MCP
  6. Public discovery endpoints
  7. Data and standards
  8. Hard boundary
  9. Stranger Verification Standard
  10. Keywords

MAILTYPE

Email/domain → objective mail capability intelligence.

MAILTYPE is a tiny REST + MCP API for applications that need fast, objective domain-level email infrastructure answers before accepting, storing, routing, or acting on an email address.

Live API: https://mailtype-api.onrender.com/docs
OpenAPI: https://mailtype-api.onrender.com/openapi.json
Playground: https://mailtype-api.onrender.com/play?q=gmail.com
MCP endpoint: https://mailtype-api.onrender.com/mcp

What it returns

  • DOMAIN_EXISTS
  • CAN_RECEIVE_MAIL
  • MX records and provider
  • disposable-domain evidence
  • SPF
  • DMARC
  • MTA-STS
  • confidence, evidence, and checked_at

Why MAILTYPE

MAILTYPE deliberately does not perform SMTP probing or claim that an individual mailbox exists. It answers the cheaper, objective domain-level questions that software often needs first. UNKNOWN is a valid answer whenever the evidence is insufficient.

REST

curl -H "X-API-Key: YOUR_KEY" \
  https://mailtype-api.onrender.com/v1/domain/gmail.com

curl -H "X-API-Key: YOUR_KEY" \
  https://mailtype-api.onrender.com/v1/email/person@gmail.com

MCP

Endpoint: POST https://mailtype-api.onrender.com/mcp

Tool: inspect_mail_domain

Input:

{"input":"gmail.com"}

Public discovery endpoints

Data and standards

MAILTYPE uses DNS evidence plus a maintained legally reusable disposable-domain dataset. The API exposes its methodology and source disclosure publicly. Relevant standards include RFC 5321, RFC 7505 (Null MX), RFC 7208 (SPF), RFC 7489 (DMARC), and RFC 8461 (MTA-STS).

Hard boundary

MAILTYPE does not verify that a mailbox exists, connect to recipient SMTP servers, send email, infer deliverability from opaque scores, or claim CAN_RECEIVE_MAIL=YES without explicit MX evidence. If a domain exists but explicit MX evidence is insufficient, MAILTYPE returns UNKNOWN.

Stranger Verification Standard

Our own tests, health probes, validators, uptime traffic, and known internal callers do not count as adoption. A tool call alone does not automatically become a verified stranger; outside calls remain unverified until evidence supports credible real use.

Keywords

email API · domain API · MX lookup API · disposable email domain API · SPF API · DMARC API · MTA-STS API · email infrastructure · email validation preflight · MCP server · developer API

Questions fréquentes

Qu'est-ce que MAILTYPE — Email Domain Capability Intelligence ?

Email-domain intelligence: MX capability, provider, disposable status, SPF, DMARC, and MTA-STS.

Comment installer MAILTYPE — Email Domain Capability Intelligence ?

Il fonctionne comme serveur distant. Dans Claude Code : claude mcp add --transport http mailtype-email-domain-capability-intelli 'https://mailtype-api.onrender.com/mcp' --header 'X-API-Key: <MAILTYPE API key>'. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour MAILTYPE — Email Domain Capability Intelligence ?

Oui. Il attend X-API-Key, à renseigner dans sa configuration.

MAILTYPE — Email Domain Capability Intelligence est-il open source ?

Son code est public sur GitHub, mais le dépôt ne déclare pas de licence standard.

Qui maintient MAILTYPE — Email Domain Capability Intelligence ?

Il est publié par GSterlingPress. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.