UCEPROTECTL3 Blacklist: All You Need to Know + How to Remove Yourself

Created On
August 30, 2023
Image of Smartlead's blog post on UCEPROTECTL3 Blacklist and how to remove yourself

It is confusing and frustrating to find out your domain/IP is getting UCEPROTECTL3 blacklist, especially if you have done nothing wrong. Fortunately, you can take action to remove your IP address from the UCEPROTECTL3 blacklist and regain email deliverability. So, fret not; we've got you covered. In this article, we've discussed why your IP/domain has been blacklisted and its possible solution. 

If you have been sending unsolicited cold emails from an email account with a poor email reputation, you may end up on the UCEPROTECTL3 blacklist. 

What is UCEPROTECTL3 Blacklist? 

A UCEPROTECTL3 Blacklist detects IP addresses from Internet Service Providers (ISPs) with a poor email reputation. It also keeps track of subnets. 

Subnet Blacklists are useful in situations where Internet Service Providers (ISPs) accommodate entire companies engaged in sending bulk spam emails (unsolicited emails). The UCEPROTECTL3 Blacklist also has the responsibility of cataloging individual IP addresses associated with multiple domains or email servers. When an organization sends unsolicited bulk emails (UBE), there is a risk that the entire IP range might end up on the blacklist.

UCEPROTECT has three levels of blacklists: 
  • UCEPROTECTL1: lists single IP addresses
  • UCEPROTECTL2: lists multiple IP addresses
  • UCEPROTECTL3: lists entire ranges of IP addresses

The major purpose of the UCEPROTECTL3 Blacklist is to force Internet Service Providers or administrators to educate their users about email abuse & malpractices and take preventative actions to prevent it from happening.

UCEPROTECTL3 works on collected data from various sources, such as spam traps, spam filter detection, user submissions, and honeypots, to maintain a comprehensive IP blocklist. 

How to Know if You are on the UCEPROTECTL3 Blacklist?

Usually, businesses that send unsolicited bulk emails with poor sender reputation may end up on the UCEPROTECTL2/ L3 Blacklist.

You might also get blacklisted if you are using the same Internet Service Provider as an individual/business that sends out unsolicited bulk emails. The easiest method to determine whether you're on a blacklist is to connect an inbox from the relevant domain to MXToolbox and use the MX Lookup feature. It runs your email address through 24 most common IPv4 blacklists to check whether your inbox and connected domains have been listed on any blacklist.

How to Remove Yourself from UCEPROTECTL3 Blacklist? 

There are two ways to remove yourself from the UCEPROTECTL3 blocklist – you can either get automatically removed from the list or pay the organization to get your IP removed. 

If you accidentally get blacklisted on UCEPROTECTL3, and there's no spam report for seven days straight, your IP will automatically get removed from the blacklist without any completion fee. 

However, there's another option to get quickly removed from the list. You can't directly request removal; instead, you can speed up the process of removal by offering monetary 'Donations' to the organization. 

However, Smartlead doesn't advocate for paying blocklist removal fees from any blacklist. And if you submit the removal request without addressing the main issue, your IP may get blacklisted again, extending the listing period in the blacklist. 

According to the UCEPROTECT website, the immediate removal won't be applicable if: 

Image of why UCEPROTECTL3 immediate removal not available

If you still want to donate to get your IP removed, you will find more information here

Reduce the Risk of Getting Blacklisted on the UCEPROTECTL3 

The key is to engage in standard email practices aligning with the internet laws. Make sure you: 

  • Verify all the inboxes (sender email addresses) before performing outreach 
  • Refrain from sending unnecessary emails 
  • Do not use spam-triggering words such as "Additional income," "Earn money," "Bonus," etc., in your email copies. 
  • Stop sending bulk emails; send no more than 30-50 emails a day. Smartlead offers unlimited email warmups with auto-rotating email addresses. This feature ensures top-notch email deliverability before you send out cold emails. Also, Smartlead assigns high-deliverability IP servers for each campaign, so you don't need to worry about getting blacklisted. 

4 ‘UCEPROTECT Recommended’ Tips to Stay Off Blacklists 

  1. If your system, with technologies or procedures, is capable of being a part of a DDOS against others, you should refrain from using it. Also, encourage your customers not to do it with their servers. Make sure you are not using SAV or Sender verify (AKA, sender callouts) or any other kind of Backscatter.
  2. Spammers typically send millions of unnecessary emails. It is a number game for them. Do not fall for it – build your email list from scratch and send only a few hundred to the recipients who might really be interested in your offer. 
  3. Block all outgoing connections from client dynamic/homeusers/dialups to destination-port 25 TCP UNIVERSE if that destination is not your mail-relay/smart-hosts and make sure they connect to your SMTP submission or mail relays/smart-hosts instead.
  4. Secure your servers while onboarding new customers stop open relays and open proxies at customers with static IP addresses and your dedicated line customers. Remember to secure your servers if you are running a data center so your customers don't get hacked. 

Terms You Should Know

Unsolicited Bulk Email (UBE): Unsolicited bulk email is a formal name for spam or junk emails sent to people who have not opted-in to receive emails from that sender. These emails are usually commercial and often called unsolicited commercial emails. 

IP: Internet Protocol or IP is a numerical identification label for devices that use the IP for communication. An IP address serves two primary purposes: location addressing and network interface identification.

Your TOP PRIORITY is to Ensure Your Emails Don't Land in Spam: Send with Smartlead

Although blacklists are alarming, most external blocklists don't have any significant effect on Microsoft or Google inboxes. 

In fact, the only thing that matters is whether your email lands on your recipients' primary inbox or not. So, make sure your DELIVERABILITY IS OPTIMUM. 

Smartlead is dedicated to warming up your inboxes before you launch outreach campaigns. It offers unlimited email warmups, auto-rotating email addresses, and dynamic IP addresses to maintain top-notch email deliverability and sender reputation

Smartlead warms up your email account by automatically sending warm up emails to other warm up users from your mailbox. This mimics real-world user behavior, such as sending, opening, saving from spam, and responding to warm up emails. This procedure helps in the development of a positive reputation for your email account, ensuring that your emails are landing in the recipient's inbox rather than the spam folder. To avoid being identified as spam, the warmup emails include a unique identity tag.

Image of Smartlead homepage of its email warm-up feature

Besides email warmups, Smartlead also offers the following features to nail outreach: 

  • Unlimited sender accounts
  • Master inbox
  • A/B testing
  • Subsequences
  • Auto-rotating email addresses
  • Dynamic IP servers
  • Whitelabel
  • HubSpot integration 
  • APIs and webhooks
  • Omnichannel outreach 

Final Thoughts

Just like UCEPROTECTL2, UCEPROTECTL3 happens mostly because of your hosting provider. We, however, recommend you check your deliverability score and sender reputation to predict where your emails land. 

Landing in spam folders not only loses your customers and money, but your sender reputation is also negatively impacted. This can directly affect your brand image. 

If you are performing your outreach manually, we'd recommend you subscribe to a sales engagement and cold emailing tool like Smartlead to maintain high deliverability, consistent sender reputation, and higher ROI.

What’s a Rich Text element?

The rich text element allows you to create and format headings, paragraphs, blockquotes, images, and video all in one place instead of having to add and format them individually. Just double-click and easily create content.

  • dfbvrsg
  • svsv

Static and dynamic content editing

A rich text element can be used with static or dynamic content. For static content, just drop it into any page and begin editing. For dynamic content, add a rich text field to any collection and then connect a rich text element to that field in the settings panel. Voila!

How to customize formatting for each rich text

Headings, paragraphs, blockquotes, figures, images, and figure captions can all be styled after a class is added to the rich text element using the "When inside of" nested selector system.

Author’s Details

Sattwik Das

Sattwik is a Digital Marketing professional at Smartlead. He is a dedicated content writer who focuses on juggling words to bring out meaningful content. He is experienced in well-researched and SEO-optimized content creation, content editing, and copywriting for various businesses throughout the globe. His expertise in SEO, SMM, and SMO with a touch of creativity helps businesses grow and maximize their credibility and sales.


Edited by:

Charu Mitra Dubey


Frequently asked questions

General Questions

What are active leads?

Active leads are the contacts you upload in Smartlead, similar to contacts in HubSpot; if you upload 1000 leads to a campaign, they are considered 1000 active leads. If you upload similar leads to a new campaign, they are not considered a “new active lead” as they already exist in our system.

Do you provide mailboxes, or do I need to connect my own?

We don’t offer mailboxes yet. You need to get your own dedicated list of mailboxes using popular providers like Gmail, Outlook, Zoho, and others that exist in the market. Once you get them, follow our detailed guides to connect them quickly.

Do you offer guides and articles on succeeding with cold emails?

Absolutely, one of our most popular guides can be found right here. It's been used by a large percentage of users to go from zero to cold emailing experts. Covering all topics from email infrastructure to copywriting and lead sourcing.

Is another tool needed for warmups?

No, Smartlead has over 200,000 highly reputed mailboxes connected. The advantage you get along with naturalized AI conversations is access to aged domains you will never find in any warmup tool.

What is the API commonly used for?

It is used popularly by agencies to automate their entire lead generation process as well as to connect Smartlead to external tools to push and pull data from. You can also connect to 1000s of apps using Zapier.

What type of businesses sees the most success with Smartlead?

Anyone that can close deals from demos will succeed with Smartlead. It works for Sales companies, Marketing agencies, SaaS businesses, Recruitment, and offline companies (like construction).

Do you provide me with lead sources?

We do not provide you with leads. You will need to use other data providers. These leads can be automatically added to Smartlead using our API or bulk uploaded via our CSV upload system.

Do you integrate with any CRMs?

We're building native integrations with Hubspot, Salesforce, Close, Pipedrive, and many more. The best part, due to our open API and Webhook infrastructure, you can connect to any CRM in the world without an issue.

How many team members can I add?

You can add an unlimited number of team members, as well as assign them roles and authority access.

Do you have custom plans beyond the Pro plan?

Yes, it's common for many people to move to Custom plans after a few weeks. You can view all the options for up to 10M leads on the subscription page once you sign up for free.

Powerful Automated Email Marketing that Drives Sales.

  • All Features Included
  • No Credit Card Required
  • Free Warmup Included