Mailwarm is the email deliverability company. We help senders get into the inbox and stay there, through products, tools, and services built for both humans and AI agents.
Mailwarm is the email deliverability company. We help senders get into the inbox and stay there, through products, tools, and services built for both humans and AI agents. ✦ Mailwarm.com: The original email warmup tool. Build sender reputation automatically through real, positive inbox interactions across a large network of mailboxes, with built-in monitoring and deliverability insights.
From the launch
Your emails are going to spam, and most tools don’t tell you why. 👉 Try mailX: mailX by Mailwarm (YC S20) is a new way to approach email deliverability. Not just raw DNS data, but clear answers, exact issues, and actionable fixes, in seconds. Whether you're a founder, a sales team, or building AI agents, email deliverability is a hidden bottleneck. mailX helps you understand what’s wrong and how to fix it, without technical complexity. mailX is designed for both operators and systems: - Native AI Agent compatible (MCP-ready) - JSON API for developers and automation - Instant DNS & email deliverability analysis - No signup required Explore the tools: - SPF Checker → - DKIM Checker → - DMARC Checker → - Blacklist Checker → Email is still the most powerful growth channel. But if you land in spam, nothing else matters. mailX helps you go from: Guessing → to diagnosis → to resolution Mailwarm: YC Summer 2020: mailX by mailwarm - Instant deliverability diagnostics for AI agents & humans.
