Charter and Cox Are Merging: Here’s What It Means for Your Email List

Charter and Cox Communications just announced a $34.5 billion merger.

While it may sound like just another broadband headline, this move could have a significant impact on your email marketing strategy.

Below, let’s see what this means for your strategy and how to stay ahead.

What This Merger Means for You

When two internet providers with millions of users and their own email domains merge, a few things can happen:

• Old email addresses, such as @cox.net or @charter.net, may stop working.
• Bounce rates can spike as mailboxes disappear.
• Spam filters might shift as both companies blend their filtering systems.
• Delivery speeds may be affected by traffic rerouting and server updates.

Your list might be clean today, but this kind of merger can render valid contacts inactive. Staying ahead means keeping a close eye on your metrics and acting fast if you spot a change.

Let’s see how below.

How to Stay One Step Ahead (and How Moosend Has Your Back)

So, how can you protect your deliverability and keep your list in top shape during all this?

Here’s how Moosend helps you stay one step ahead.

Automatically suppress hard bounces – no manual cleanup needed

When an email hard bounces (meaning the address is invalid or no longer exists), Moosend instantly adds it to your suppression list.

This protects your sender reputation and automatically prevents future sends to dead addresses.

Keep your suppression list up to date as domains are phased out

If Charter or Cox retires legacy domains like @cox.net, affected emails will bounce, and Moosend will automatically suppress them for you.

No action needed from your side, and your list stays healthy without lifting a finger.

Monitor bounce trends and alert you when something’s off

Instead of waiting for issues to pile up, Moosend actively tracks your bounce rates and delivery performance.

If we detect an unusual spike, such as one caused by ISP changes, we investigate and alert you promptly, so you can take action before it impacts your results.

Adapt when domain policies change to ensure compliance

ISPs can change spam filtering rules at any time. With Moosend, your campaigns adapt to those shifts thanks to our ongoing infrastructure updates, smart throttling, and deliverability best practices baked into the platform.

Want to be extra safe? Run a reconfirmation campaign for older Cox and Charter users. Or segment them and monitor their performance over the next few months.