Warmforge vs. Mailgun

Warmforge is an advanced email warm-up and deliverability platform designed to enhance the effectiveness of cold email campaigns. By simulating human-like interactions within mailboxes, it gradually increases sending volumes and engages in AI-driven exchanges, signaling to email service providers that the inbox is active and trustworthy. This process significantly improves sender reputation, ensuring that emails reach recipients' primary inboxes rather than being filtered into spam folders.

150,000+ companies. 400 billion emails a year. 99.99% uptime — backed by SLA Mailgun is the full-stack email infrastructure platform developers and marketers trust to send, test, validate, and improve deliverability at scale. One platform covers the entire email lifecycle: preview and fix rendering issues before you send, clean your lists in real time, fire emails via API at any volume, and surface deliverability problems with AI before they cost you. SOC 2 Type I & II, HIPAA, GDPR, ISO 27001 certified. Trusted by Microsoft, Lyft, and American Express.