Switching to a new email marketing platform can feel overwhelming—there’s so much to think about, from migrating your contacts to ensuring your emails reach the inbox. One key piece often gets overlooked: warming up your domain and IP address. At ZooTools, we’ve built a friendly, automated feature to handle this for you, making the process smooth and stress-free.

In this article:

Why Is Warming Up So Important?

Imagine you just started emailing from a brand-new domain and immediately send out thousands of emails. ISPs (like Gmail and Outlook) would see this as suspicious. They might flag your emails as spam or even block them entirely. Ouch.

Warming up is like introducing yourself gradually—it shows ISPs that your domain is trustworthy and that people want to hear from you. This means fewer bounces, more inbox placements, and a better email-sending reputation.

How ZooTools’ Warmup Feature Works

We’ve created an automated warmup system that takes all the guesswork out of the process. Here’s how it helps:

1. Automatic Scheduling: When you select the "Warm-Up" delivery method, ZooTools breaks your email list into smaller groups and gradually increases the daily volume.
2. Steady Growth: Over 30 days, your domain’s sending capacity scales from just 200 emails a day to millions. This ensures ISPs recognize your domain as reliable.
3. Compliance and Trust: We follow best practices for email deliverability, like using authenticated sending policies (SPF, DKIM, DMARC).

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IMPORTANT: Warm up your list as often as needed. If your campaign isn’t time-sensitive, using ZooTools' warm-up feature always is a great idea to send emails progressively.

If you don’t email frequently (which you should!), warm up your list after inactivity to maintain a strong email reputation. Consistency is key—stick to a regular schedule.

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Warmup Schedule at a Glance

Here’s how the daily email volume grows during the first month: