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Prevents your emails from landing in spam.
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. ✦ ThemailX.com: Instant deliverability diagnostics for AI agents and humans. Check all protocols SPF, DKIM, DMARC, Inbox placement and more via MCP, API, or web. Get specific fixes and actions, not just scores. ✦ Mailadept.com: Email deliverability on autopilot. A subscription-based, AI-native service where agents and deliverability experts collaborate to audit your setup, fix issues, and monitor inbox placement continuously. Build reputation with Mailwarm, diagnose problems with themailX, fix and maintain with mailadept. Doing email marketing or cold outreach? Book a call through mailadept.com, we'll show you which one fits.
Mailwarm is an email warmup tool designed to improve sender reputation and deliverability, helping campaigns reach inboxes and increase engagement. It positions itself as a system that runs automated warm-up activity across real inboxes to signal legitimacy to providers.
Connect your email account and activate automated warm-up that sends and receives interactions with real inboxes (over 50,000 Mailwarm accounts). It provides live inbox vs spam tracking, daily activity dashboards, and the ability to adjust or pause warming. The service supports provider-level warmup control for Gmail, Outlook, Microsoft 365, Yahoo, and SMTP, with expert deliverability guidance included in every plan.
Who it’s for: Founders, marketers, sales teams, agencies, newsletter creators, and developers who run cold outbound or email campaigns and want to improve inbox placement.
Public testimonials, live inbox tracking features, pricing pages with plans, and emphasis on expert deliverability guidance indicate traction and ongoing product maturation.
Built and scaled Mailwarm, an email deliverability SaaS. Now experimenting with a startup studio focused on rapid validation. Passionate about building lean, testing fast, and failing on purpose until something works. YC and Station F alum.
mailX tells you why emails go to spam and how to fix it, via web, API, and MCP.
MailX offers a free deliverability diagnostic platform (web, JSON API, and MCP) that explains why emails go to spam and provides fixes for humans and AI agents. It is part of Mailwarm’s broader deliverability ecosystem, which includes Mailwarm for sender reputation and MailAdept for continuous deliverability monitoring.
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