Email warm-up is based on positive interactions between your inbox and a network of inboxes.

Warmbox relies on a network of +10.000 inboxes specially created for email warm-up and managed by our tech team. Those inboxes are aged from 1 month to 15 years, from +100 countries, different domains and email providers.

We take great care of these mailboxes in order to be sure that it will help you to effectively improve your deliverability.