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MCP live v1.0.0 streamable-http

MailX Email Deliverability

com.themailx/email-deliverability

Check SPF/DKIM/DMARC/BIMI, blacklists, SMTP/IMAP; DNS lookups; generate email DNS records.

Uptime
7.7%
26 probes
Response
1193ms
last probe
Tools
16
callable
Primary URL
https://themailx.com/mcp

Tools · 16

spf_check

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.

dkim_check

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.

dmarc_check

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.

bimi_check

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.

dmarc_generate

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

spf_generate

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.

smtp_check

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 autho…

imap_check

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

smtp_finder

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.

imap_finder

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.

blacklist_check

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

mx_lookup

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

txt_lookup

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

cname_lookup

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

ptr_lookup

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

dns_lookup

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

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How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "mailx_email_deliverability": {
      "url": "https://themailx.com/mcp",
      "transport": "streamable-http"
    }
  }
}