MailX Email Deliverability

Check if a domain has a valid SPF (Sender Policy Framework) DNS record. SPF specifies which mail servers are authorized to send email on behalf of a domain.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to check SPF records for, e.g. example.com"
    }
  },
  "required": [
    "domain_name"
  ]
}

Check if a domain has a valid DKIM (DomainKeys Identified Mail) DNS record for a given selector. DKIM allows the receiver to verify that an email was sent by the domain owner.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to check DKIM records for, e.g. example.com"
    },
    "dkim_selector": {
      "type": "string",
      "description": "The DKIM selector to look up, e.g. google, default, selector1"
    }
  },
  "required": [
    "domain_name",
    "dkim_selector"
  ]
}

Check if a domain has a valid DMARC (Domain-based Message Authentication, Reporting & Conformance) DNS record. DMARC tells receiving servers what to do with emails that fail SPF or DKIM checks.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to check DMARC records for, e.g. example.com"
    }
  },
  "required": [
    "domain_name"
  ]
}

Check if a domain has a valid BIMI (Brand Indicators for Message Identification) DNS record. BIMI allows brands to display their logo next to authenticated emails in supporting email clients.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to check BIMI records for, e.g. example.com"
    }
  },
  "required": [
    "domain_name"
  ]
}

Generate a DMARC DNS record for a domain. Returns the record name, value, and type ready to be added to DNS.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to generate a DMARC record for, e.g. example.com"
    },
    "email": {
      "type": "string",
      "description": "The email address to receive DMARC aggregate reports, e.g. [email protected]"
    },
    "dmarc_policy": {
      "type": "string",
      "description": "The DMARC policy: none (monitor only), quarantine (mark as spam), or reject (block entirely)",
      "enum": [
        "none",
        "quarantine",
        "reject"
      ]
    }
  },
  "required": [
    "domain_name",
    "email",
    "dmarc_policy"
  ]
}

Generate an SPF DNS record for a domain based on the email provider being used. Returns the record name, value, and type ready to be added to DNS.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to generate an SPF record for, e.g. example.com"
    },
    "provider": {
      "type": "string",
      "description": "The mail provider identifier, e.g. google, mailgun, sendgrid, postmark, amazon-ses"
    },
    "hard_fail_boolean": {
      "type": "boolean",
      "description": "If true, uses strict -all policy (reject unauthorized senders). If false, uses soft ~all (mark but deliver)."
    }
  },
  "required": [
    "domain_name",
    "provider",
    "hard_fail_boolean"
  ]
}

Test an SMTP server connection by attempting to connect and authenticate. If from_email and to_email are provided, the tool may attempt to send a test email. Only provide these fields if you are authorized to send from the account and intentionally want to test full sending capability.

{
  "type": "object",
  "properties": {
    "host": {
      "type": "string",
      "description": "The SMTP server hostname, e.g. smtp.gmail.com"
    },
    "port": {
      "type": "integer",
      "description": "The SMTP port number, e.g. 587 for TLS, 465 for SSL, 25 for unencrypted",
      "minimum": 1,
      "maximum": 65535
    },
    "username": {
      "type": "string",
      "description": "The SMTP username for authentication"
    },
    "password": {
      "type": "string",
      "description": "The SMTP password or app-specific password"
    },
    "encryption": {
      "type": "string",
      "description": "The encryption protocol: ssl, tls, or none",
      "enum": [
        "ssl",
        "tls",
        "none"
      ]
    },
    "from_email": {
      "type": "string",
      "description": "Optional sender email address for sending a test email"
    },
    "to_email": {
      "type": "string",
      "description": "Optional recipient email address for sending a test email"
    }
  },
  "required": [
    "host",
    "port",
    "username",
    "password",
    "encryption"
  ]
}

Test an IMAP server connection by attempting to connect and authenticate. Use this to verify email receiving configuration.

{
  "type": "object",
  "properties": {
    "imap_host": {
      "type": "string",
      "description": "The IMAP server hostname, e.g. imap.gmail.com"
    },
    "imap_port": {
      "type": "integer",
      "description": "The IMAP port number, e.g. 993 for SSL, 143 for unencrypted",
      "minimum": 1,
      "maximum": 65535
    },
    "username": {
      "type": "string",
      "description": "The IMAP username for authentication"
    },
    "password": {
      "type": "string",
      "description": "The IMAP password or app-specific password"
    },
    "imap_encryption": {
      "type": "string",
      "description": "The encryption protocol: ssl, tls, or none",
      "enum": [
        "ssl",
        "tls",
        "none"
      ]
    }
  },
  "required": [
    "imap_host",
    "imap_port",
    "username",
    "password",
    "imap_encryption"
  ]
}

Look up SMTP server settings (host, port, encryption) for a given email provider. Use this to find the correct SMTP configuration for services like Gmail, Outlook, SendGrid, etc.

{
  "type": "object",
  "properties": {
    "provider_name": {
      "type": "string",
      "description": "The email provider name to look up, e.g. gmail, sendgrid, mailgun, outlook"
    }
  },
  "required": [
    "provider_name"
  ]
}

Look up IMAP server settings (host, port, encryption) for a given email provider. Use this to find the correct IMAP configuration for services like Gmail, Outlook, Yahoo, etc.

{
  "type": "object",
  "properties": {
    "imap_provider_name": {
      "type": "string",
      "description": "The email provider name to look up, e.g. gmail, outlook, yahoo"
    }
  },
  "required": [
    "imap_provider_name"
  ]
}

Check if a domain or IP address is listed in popular email blacklists (DNSBLs). Being blacklisted can severely impact email deliverability.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain name or IP address to check against blacklists, e.g. example.com or 1.2.3.4"
    }
  },
  "required": [
    "domain_name"
  ]
}

Look up MX (Mail Exchanger) records for a domain. Returns the mail servers and their priorities.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to look up MX records for, e.g. example.com"
    }
  },
  "required": [
    "domain_name"
  ]
}

Look up all TXT records for a domain. TXT records contain SPF policies, domain verification tokens, DKIM keys, and other metadata.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to look up TXT records for, e.g. example.com"
    }
  },
  "required": [
    "domain_name"
  ]
}

Look up CNAME (Canonical Name) records for a domain. Shows where a hostname aliases to.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to look up CNAME records for, e.g. www.example.com"
    }
  },
  "required": [
    "domain_name"
  ]
}

Reverse DNS lookup. Find the hostname associated with an IP address. A valid PTR record is important for email sending reputation.

{
  "type": "object",
  "properties": {
    "ip_address": {
      "type": "string",
      "description": "The IP address to look up, e.g. 8.8.8.8 or 142.250.80.46"
    }
  },
  "required": [
    "ip_address"
  ]
}

Look up all DNS records for a domain in one query. Returns A, AAAA, CNAME, MX, NS, TXT, and SOA records.

{
  "type": "object",
  "properties": {
    "domain_name": {
      "type": "string",
      "description": "The domain to look up all DNS records for, e.g. example.com"
    }
  },
  "required": [
    "domain_name"
  ]
}