Mailx Tools is an MCP server that gives AI agents a complete email-deliverability diagnostics toolkit. Verify your domain's ▎ SPF, DKIM, DMARC, and BIMI configuration, look up any DNS record type (MX, CNAME, TXT, PTR), check blacklists, test SMTP and ▎ IMAP servers, and auto-generate SPF and DMARC policies. Designed for marketers, deliverability engineers, and anyone ▎ troubleshooting why emails aren't landing in the inbox.
Not monetized yet
Turn mailx-tools’s tool calls into revenue: one disclosed sponsored slot, 70% revenue share, fail-open by design.
Install mailx-tools
For anyone using mailx-tools — no Lulu account neededclaude mcp add --transport http mailx-tools https://mailx-tools--mailwarm.run.tools
9 field-tested tactics as a designed playbook plus skills your coding agent can run. Free.
Get the Kit →FAQ
Run: claude mcp add --transport http mailx-tools https://mailx-tools--mailwarm.run.tools
Yes — it’s a remote MCP server, so no local install is needed.
ChatGPT: Settings → Connectors → Advanced → Developer mode → Add connector, then paste https://mailx-tools--mailwarm.run.tools.
Claude.ai: Settings → Connectors → Add custom connector, then paste the same URL.
Unrated out of 100, computed from cross-registry traction signals (installs, stars, registry presence) — never influenced by sponsorship.
Similar servers
Works well together
Your server?
This is for the person who owns mailx-tools — adds Lulu Ads to your own code. Not the install steps above, those are for your users.
Copies a ready prompt: your coding agent installs the lulu-ads SDK, wires the slot, and applies the widget design guide.
or set up manually at getlulu.dev/publishers
Get verified so you can edit the page. Your badge is already live below — no claim needed for that.
Managed hosting with monetization built in — waitlist.
[](https://getlulu.dev/mcps/mailx-tools-f42bcc)