Poor Deliverability Cause #3: Being Blacklisted

This is part four of our six-part blog series addressing the top five common causes of poor deliverability. Click here to start from the beginning.

In the world of email, there are whitelists, greylists, and—of course—the dreaded blacklists. A blacklist is a list of domains and/or IP addresses reported to be “known” sources of spam. They are available to the public and exist to help mailbox providers protect their users from unwanted email. If your practices or your content look spammy, you could wind up being blacklisted, regardless of whether or not you’re a legitimate, permission-based sender.

Is your IP address blacklisted? Use our free tool to find out.

Having your IP or domain added to a blacklist can have a serious impact on your sender reputation and therefore your email deliverability. And once you’re added to a blacklist, it’s not always easy to be removed. It’s important to understand why you’re on a blacklist. Rather than simply delisting yourself—an option offered by some blacklists—fix the root cause of the listing so your domain or IP addresses don’t end up on the blacklist again.

There are over 300 publicly available spam blacklists—some carry more weight than others. Learn more about the most important blacklists and common reasons for getting listed here.

Learn more about the most common blacklists and see trends in blacklist listings in our “Blacklists: The Ultimate Guide” infographic or by listening to our on-demand webinar, “The Ultimate Guide to Email Blacklists.”

Stay tuned for part five, where we’ll talk about the fourth possible cause of poor deliverability, poor list quality.

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