If you’re scaling your email program and growing your recipient list, it’s a good practice to add additional IPs to accommodate your mail streams. This is an important milestone because your IP is one of the most crucial factors in determining whether your email makes it to the inbox.

If you don’t properly warm up your new IPs, the Internet Service Providers (ISPs) won’t deliver your email. Why? Because they’re not familiar with your sending patterns yet. It’s important to introduce your new IP to ISPs by gradually increasing your sending volume over a set period of time. This is known as “IP warmup.”

Warm up your IP with the help of our revamped guide, How to Warm Up An IP, which  covers everything you need to know about IP allocation and warmup methods.

The guide also includes:

• An explanation about why IP warmup is one of the most important factors that ISPs judge when determining your overall sending reputation
• A sample newsletter and transactional warmup schedule
• Tips and tricks to help you before, during, and after your IP warmup

Keep in mind that every sender and email program is different and there is no perfect formula to achieve IP warmup perfection. But there are certain guidelines and warmup recommendations that will get you started on the right path and help you reduce your blocks and delivery issues once you start sending email on a new IP address.

Whether you are completely new to sending large volumes of email or you’ve grown your email program to require multiple dedicated IPs, this guide can help you as you scale your sending volume and ensure that you’re prepared to send as much email as you can. Check out the guide now!



Kelsey Bernius
As content marketing manager at SendGrid, Kelsey oversees all functions of the SendGrid Delivery blog including scheduling, writing, editing, and publishing. Her downtime is dominated by either her mountain bike or skis (depending on current weather forecast)–and mixing up the perfect handcrafted margarita afterward.