Inbox Warm-Up Agent

Learn how the Inbox Warm-Up Agent gradually builds a healthy sender reputation and improves your email deliverability over time.

Getting started with Inbox Warm-Up Agent

The Inbox Warm-Up Agent sends a small, growing number of friendly emails from your domain each day. These messages are opened, replied to, and marked as important so inbox providers slowly learn to trust your domain.

For the best results, make sure your email authentication (DKIM, SPF, DMARC, rDNS, and MX records) is configured correctly before you start warming up. Use the tabs on the left to learn how each setting works and why it matters for deliverability.