IP warming is a deliverability best practice. In other words, it will increase email delivery. You have a dedicated IP address, right? When using your dedicated IP address, warming it up helps build your reputation with ISPs (Internet Service Providers).
Why do we want to keep a good relationship with ISPs, you ask? Well, having a good reputation with ISPs will mark you as a legitimate email sender and more of your mail will be delivered to the correct inbox. When IP warming, you are gradually sending more mail from your dedicated IP to establish a good reputation with ISPs.
I have a dedicated IP address, but I haven’t started IP warming. What can I do?
The answer to this depends on how long you have had your dedicated IP, how many emails you send out, how people are interacting with those emails (opening, clicking, forwarding, deleting, etc), how large your list is, etc. There are several IP Warming Plans available now that will increase email...