Email Blacklist: How to Tell If You’re on It (and What to Do If You Are)

Josh Slone posted this in the Sales Skills Category
Reading Time: 6 minutes

Landing on an email blacklist can be like purgatory.

In this post we share how to handle it.

email blacklist
I don’t watch much network TV, but I was a sucker for the show Burn Notice. And, believe it or not, it relates to being on the email blacklist. It’s about a former U.S. spy who’s “burned”.

The intro says, “You’re blacklisted; when you’re burned, you’ve got nothing. No cash, no credit, no job history. You’re stuck in whatever city they decide to dump you in.” email blacklist
Cheesy? You betcha.

But a little mindless entertainment every now and again is just what a content producer needs to get his mind off of facts, figures and tips. And in this case, it relates incredibly well to our topic at hand.

While being put on a naughty list isn’t as terrible as waking up in a strange location, without a job—it can still be rough.

To use the show’s intro, When you’re on the email blacklist, you’ve got nothing. No deliverability, no credit, no opens. You’re stuck in whatever spam folder “they” decide to dump you in. I probably didn’t even have to intro this topic.

If you send cold email, you should be terrified to end up on one of the blacklists. You’re here to find out if you’re on one or not. So, let’s take a look at that.

What is an Email Blacklist?

Here’s a quick definition from our very own support page on the subject: An email Blacklist is a real-time database that uses criteria to determine if an IP is sending email it considers to be SPAM. There are several blacklists… Each list [has] a unique way of accepting inbound mail and determining if email is considered SPAM. They can all impact deliverability for your emails.

Here’s an image from Spamhaus (a top blacklist site). It provides a visualization of how the spam-labeling process works.

email blacklist
So, based on the data (of your address), there are three places for your email to end up. If you’re on the list, you could end up in spam or no delivery at all.

When you’re not, you will show up in the inbox.

Important: If you notice the box in the middle that says “Policy Decision”. Most of these blacklist services set up their algorithms. And getting off of the naughty list is achievable in some cases, if you’re willing to play by the rules. We’ll get into that further down. Now, onto the biggest (and only) indicator.

Email Blacklist Indicator: Open Rates Plummet

If your open rates drop, or if you’re just starting out and your open rates are less than 15%… you have a problem. Before you panic, you should check a few things out to ensure that your process is okay. Check things like:
  • Subject Line: If you have a really terrible subject line, people may not open. Or, it could have been sent to spam. Things like all caps, “Today Only”, and “Act now” in your cold email isn’t going to end well.
  • CRM/Software: There could have been an issue with your emailing solution. Everyone has issues from time to time. Maybe it’s a botched send.
  • Bad Lead Data: Let’s say you send 1000 emails from a new list and have a %10 open rate. That’s terrible, but let’s say that only 1/3 of the contacts were good. Now you’re up to a decent open percentage. Bad data is a common source of poor outreach.
If you check these things and can’t find a cause— most likely— it means your email address is not trusted.

email blacklist
But it may not be blacklisted, it could be that your sending reputation has taken a hit. So, before you panic, take a quick look at your rep. 

Check Your Email Sending Reputation

There are five good tools to check your email reputation:

1. SenderScore: SenderScore allows you to view your reputation with a 0-100 point scale (the higher the better). It’s compiled with a monthly rolling average and is probably the best known tool in the space.
2. TalosIntelligence: This one does a 3-tier ranking system (good, neutral, or poor), instead of a number system.
3. BarracudaCentral: Their reputation system is simple, with only a “good” or “poor” rating, but results are tabulated in real time, which could help you if your email KPIs have fallen off a cliff very recently.
4. TrustedSource: This is McAfee’s reputation tool and provides a bit more information for you to see potential issues surrounding your domain. 
5. ReputationAuthority: Another 0-100 scoring tool, but this one gives you specific emails that are either good or poor in addition to the score. 

If you’re score is in the dumps, you could be on the blacklist (and some of these email reputation tools may even tell you that). When this is the case, continue onto the steps provided. 

But if your scores seem ok, you may want to check with your email marketing tool. Or run through a diagnostic as to why your metrics have fallen. There are dozens of reasons for a drop.

How to Find Out For Sure

Step One: Run a Test

One of the best ways to find out if the issue is from your URL, from your lead data, or from the old CRM is to run a test. Three main services include. It’s not always accurate. For instance, I ran my personal Gmail address through Mail Tester and apparently it’s only a 6.5/10 (see screenshot below). I never send any cold email from it, mainly personal and a small bit of client email. email blacklist

Suggested Tool: Mxtoolbox

Mxtoolbox is a great quick glance for info. There are a couple dozen commands you can use to find all sorts of data, including blacklists. According to their homepage: All of your MX Record, DNS, blacklist and SMTP diagnostics in one integrated tool. email blacklist While it isn’t 100% foolproof; it can give you a further indicator that something is amiss. If the email blacklist seems like it’s the reason for your poor numbers, move on to step two.

Step Two: Check the Blacklist Sites

Well, now it’s time to check the source of potential problems — the blacklist sites themselves. Here’s a list of the most common: Most of them work the same (in terms of checking the list). That said, there are usually specific pages to search their database and actually check whether or not you’re on it.
  • MultRBL takes you right to the page and allows you to search IPv4/IPv6 address or domain name.
  • SpamCop’s is here. (Hint: you’ll need the IP address handy.)
  • SURBL’s search page is here.
  • Invaluement seems to be a collection of lists. I couldn’t find a search function.


Spamhaus gets it’s own little section of content. An immense set of lists, publicly calling out the worst spammers like the America’s Most Wanted list, and helping those who genuinely don’t want to spam. email blacklist As hard as they are on spammers, Spamhaus helps those who are looking to improve their reputation. In fact, there is a “blacklist removal center“. Enter your IP Address or Domain. If it’s on a list, Spamhaus gives a link to resources for getting off of it. Handy.

Step Three: Come Off the Email BlackList

Michael Westen, the lead character from Burn Notice, (spoiler alert) had to fake his own death, blow up a large building and move to Ireland with his girlfriend to finally escape his blacklist. Hopefully, you won’t have to take it that far. email blacklist Here are a few things that need doing to get off the list.

Find Out Why You’re on a List

Makes sense, right? In the show, the lead character doesn’t run away from the people who “burned” him. He goes along with their plan to find out more information about what happened. The worst thing to do if your IP is blacklisted is bury your head in the sand. Find out why. Send emails, make phone calls, use Spamhaus’ resources to get yourself off of the list. The worst thing to do if your IP is blacklisted is bury your head in the sand. Find out why. Click To Tweet

Change What’s Wrong

Unless there was some sort of mistake, something will need to be changed.

Maybe you broke a CAN-SPAM law. That could cost you money and your business. Perhaps, a lot of people you send to have labeled you as spam. If so, you’re likely sending emails to the wrong people or maybe you’re sending spammy content.

Set a Policy

Unless you’re a one-man-show, you’ll need to put an email policy in place to ensure that your blacklist days are behind you. Get some standard operating procedures in a doc and get your crew to read and sign that they understand it.

Talk with the Spam List

Once you’ve made the changes, make it known to the list that you’re on the up and up. Make it clear. Send them a copy of your policy along with how you’re implementing it.

Another Thing: Don’t Spam

You know that “World’s Worst Spammers” list? Guess where most of them call home? Yep, ‘Murica. Here’s a quick breakdown from Kaspersky. email blacklist

(Source: Kaspersky)

Make sure you aren’t sending spammy emails! There is a broadening definition of the word Spam in the public eye. To a certain extent, this means that email marketers have to broaden their definition of the same term.

According to Wikipedia:

Email spam, also known as junk email, is a type of electronic spam where unsolicited messages are sent by email. Many email spam messages are commercial in nature but may also contain disguised links that appear to be for familiar websites but in fact lead to phishing web sites or sites that are hosting malware.

I don’t necessarily agree with this definition.

It seems to define spam as all unsolicited emails. Then goes on to say they could lead to phishing?!

The point here?

One wrong move and the email you send is on the same level (to some) as mail order brides. The lead is not expecting your email. Many will have red flags going up right away. Most likely they’re thinking, “Someone’s trying to sell me something.”

You need to offer value to your targeted leads. So, you need to have something of value to give them. Click To Tweet

In order to offer value, you need to have something of value to give them. The definition of “spam” is very loose.

Sending an email about what you do and pitching them for a sale is considered spam if done wrongly. (Most) leads couldn’t care less what’s in it for you. It’s all about what’s in it for them. And if you’ve got nothing for them, spam is what they’re thinking.

You’re the one going into their inbox. Make sure they have a reason to open, click and respond.
Josh Slone
About Author: Josh Slone
Josh Slone is the Head Content Writer for LeadFuze. Josh writes about lead generation strategies, sales skills, and sales terminology.

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[…] week, I wrote all about the email blacklist. In this post (and possibly the next), it will be more about what companies can do to avoid spam […]

Morgan Williams

Thanks for providing this resource. It’s full of some good actionable info that you can take if you’re on a blacklist. There’s another tool called Send Forensics that’s also really good for testing email deliverability and it’s easy to use (no affiliation). Great article!


[…] poor engagement or even being reported as spam and your domain tainted. Trust me, I’ve seen the email blacklist and it makes EVERYTHING […]

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