Validate email infrastructure and deliverability by checking SPF, DKIM, DMARC, BIMI records, blacklist status, and SMTP/IMAP connectivity. Built for developers integrating email systems or diagnosing delivery issues.
com.themailx/email-deliverability
https://themailx.com/mcp
HTTP
No auth required
How models use it and what it is built for.
Validate email infrastructure and deliverability by checking SPF, DKIM, DMARC, BIMI records, blacklist status, and SMTP/IMAP connectivity. Built for developers integrating email systems or diagnosing delivery issues.
Hosted endpoint — paste into any MCP client.
Where to find authoritative docs and source for MailX Email Deliverability.
Paste any of these into Agent Studio after connecting MailX Email Deliverability.
Common questions about connecting and running MailX Email Deliverability.
What email authentication protocols does this server check?
It validates SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), DMARC (Domain-based Message Authentication), and BIMI (Brand Indicators for Message Identification) records via DNS lookups.
Can it help me diagnose why emails aren't being delivered?
Yes. It checks blacklist status, validates authentication records, and tests SMTP/IMAP connectivity to identify common deliverability blockers.
Does it generate DNS records I can use?
Yes, it can generate email DNS records (SPF, DKIM, DMARC, BIMI) that you can add to your domain's DNS configuration.
How do I authenticate or set up this server?
The server is hosted at https://themailx.com/mcp and uses HTTP transport. Refer to TheMailX documentation for any required API keys or configuration.
What's the difference between this and manual DNS lookups?
This server automates validation of all four email authentication standards in one call, checks blacklist databases, and tests live SMTP/IMAP connections—faster than checking each manually.
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