What is IP Warmup?
The IP warmup is a process that involves a systematic increase in the number of emails sent from a particular, unfamiliar, IP address. This process is intended to build the IP’s reputation over time. Volume triggers ISP SPAM filters so the number of sent emails should begin slowly, increasing consistently. The goal is to gain the ISPs’ trust regarding the IP’s sending behavior, so the ISP can identify spam emails from the IP’s. It also provides the IP an opportunity to monitor and optimize their email campaign.