mailX is a free email deliverability toolkit for humans and AI agents. It analyzes your domain's DNS, SPF, DKIM, DMARC, blacklist status, and more, providing plain-English explanations and actionable fixes to stop emails landing in spam.
Free
How to use mailX by mailwarm?
Enter your domain or IP to instantly run a live DNS lookup and deliverability audit. mailX checks SPF, DKIM, DMARC, MX, blacklists, and email infrastructure. It then generates a clear report with issues and step-by-step fixes, no signup needed.
mailX by mailwarm 's Core Features
Combined audit: Run SPF, DKIM, DMARC, MX, and blacklist checks in one click for a single report.
Plain-English explanations: Understand results without technical jargon, making fixes accessible to everyone.
MCP server and JSON API: Built for engineers and AI agents, enabling automated diagnostics and integrations.
Live DNS data: All tools run against real-time DNS, ensuring accurate and current results.
No signup or data storage: 100% free and privacy-focused, with instant results and no stored information.
mailX by mailwarm 's Use Cases
Founders launching cold email campaigns without damaging domain reputation.
Sales teams scaling outbound while protecting inbox placement and reply rates.
Marketing teams improving email performance across campaigns and automations.
Agencies managing multiple client domains with faster diagnostics and clearer reporting.
Developers debugging DNS, SMTP, and authentication records without switching tools.
