Millionverifier vs Zerobounce: Which Is Better for Email Verification?

Aug 31, 2023

Every good email marketer knows that lists often go stale. People change jobs, stop using email addresses, they enter typos as they submit their emails… Anything can happen. Cleaning up and validating your email lists is crucial if you want to keep your metrics high.

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But choosing an email verification service is nothing like choosing between two different brands of ketchup.

Today, we’re comparing two popular email verification services: Millionverifier vs Zerobounce. Let’s take a look at their email verification accuracy rates, speed, pricing and more.

Millionverifier vs Zerobounce: email verification services at a glance

Previously known as HuBoCo, Millionverifier is a bulk email verification tool that lets you verify email addresses. You can upload entire lists of emails and Millionverifier will quickly run them through an email verification process. You’ll get a breakdown of outdated emails, spam traps, typos and other types of invalid emails. It offers an automatic cleaning service so your emails can be validated as soon as someone submits them to your website.

Zerobounce is one of the most popular email verification services in the market. Known for its ease of use, great customer support and email verification accuracy, it is the choice of many email marketers around the world. Although it has a wide range of features, there are frequent complaints about it being one of the most expensive tools in the email verification industry.

While this email verifier does get bad emails out of the way from your mailing lists, it does so at a high cost, both in terms of monthly subscriptions and faulty features such as spam trap detection. You do get (somewhat) clean email lists and a good contact database, but at a high price.

Millionverifier vs Zerobounce: features

Millionverifier offers a lot of key features for email verification. You can upload your lists as files, or copy and paste them to the dashboard. Alternatively, you could connect your favorite email marketing platforms and get the lists uploaded with one click, or use the real-time email verification API.

Millionverifier features

With this feature, you can verify email addresses in real time, as someone submits them to your website.

If you want to go one step further than real-time verification, MillionVerifier has a feature called EverClean. This tool connects to your favorite email marketing software (Mailchimp, Sendinblue, Mailgun and many others). When connected, Millionverifier goes through your email lists once per day, removing spam traps, invalid addresses, temporary email accounts, typos and more, ultimately lowering email bounce rates and improving your deliverability rate.

On the other hand, Zerobounce has a much more comprehensive feature set for improving your email campaigns. Besides email validation, it offers an email finder that can let you find emails of prospects at a low cost. If your main goal is to verify emails, this may not be such an enticing feature. However, for sales teams, it could be useful.


It also offers an email activity data feature, next to email scoring. Both let you see the quality of your lists. Then there is blacklist monitoring, which is an online email validation system that checks if you have been put on a blacklist. Last but not least, Zerobounce has email testing tools that let you see if your emails are reaching your recipients’ inboxes.

If you don’t have a huge budget, there is a large number of free tools too. DKIM generator, blacklist checker, SPF generator, email list evaluator and more.

The verdict: Zerobounce has a much richer toolset and it wins this category in the email list verification tool showdown.

Millionverifier vs Zerobounce: accuracy of the email verification process

One of the most important aspects of email verification tools is the accuracy – how many invalid email addresses, as well as duplicate emails it can find. After all, the difference between a 97% and 99% accuracy can be massive if you’re validating hundreds of thousands of emails for your email campaigns.

According to Millionverifier, their accuracy is 99%, which is a pretty good result for bulk email verification. However, if you take a look around for verified user reviews, you’ll spot two things. First, this tool is not so great at spotting catch all email addresses. Two, their email validation services do not work well with Yahoo addresses. So, it’s good but it could be better.

Zerobounce also claims a 99% accuracy and according to user accounts, this is fairly accurate. Customers state that Zerobounce is great at spotting outdated, fake, catch-all and spam trap addresses. So, you can keep risky emails at bay, even if you have millions of emails that you reach out to on a daily basis.

The verdict: when it comes to accuracy of email list verification, Zerobounce takes the prize. Despite both tools having the same reported accuracy, customer reviews are on the side of Zerobounce – it can provide better email deliverability rates and save your email reputation in the long run.

Millionverifier vs Zerobounce: pricing

Millionverifier is an email verification platform that has a pretty simple pricing setup. You choose how many emails you need to run through an email verification process and that’s it. For 10,000 emails, you will have to pay a one-time free of $37. These credits can be used for the email checker, bulk verification services and the email verification API.

Millionverifier pricing

The smallest amount you can pay is $4.9, which gives you access to 2,000 email credits to keep spam emails at bay. You can use this at various email platforms, for cold emails or any other type of email content.

EverClean is an add-on that costs extra, depending on your total number of emails. As explained, this service runs through your emails every day, validating them and removing bad emails. For up to 10,000 emails, you’ll have to pay a monthly add-on of $15.

There is a free trial available and you can get up to 200 verification credits just for signing up. If you connect your email marketing software, you can get 10,000 verification credits in the free trial, which can boost your email delivery rates well.

On the other hand, Zerobounce is notorious for its pricing. There are two ways to pay for Zerobounce – get credits upfront or pay for a monthly plan. The prices are very similar for both and start at $0.008 per verified email. The more emails you verify, the cheaper the monthly cost. There are just two pricing options and none of the subscription plans are affordable compared to the competition.

Zerobounce pricing

There is one upside: Zerobounce offers a money back guarantee, which makes it unique in this market. If the accuracy they provide is 2% below the guarantee, they will refund 10% of your costs. If the accuracy is off by 4%, they refund 20% of your costs.

This sounds like a good deal until you realize that 2% of a 10k email list is 200 contacts. And even if you get 10% of your money back, that is nothing compared to te damage you can make by sending a campaign to 200 unverified addresses. You’ll end up in 200 junk folders, which could have all been prevented by a good email list cleaning service.

Having said all of this, Zerobounce is one of the most expensive email verification tools around. There is a free trial available but it only lets you validate up to 100 emails and that is not a lot of bulk email list verifications.

The verdict: Millionverifier is the better tool in terms of pricing for the clean lists it provides and its email list cleaning service.

Millionverifier vs Zerobounce: customer support

Since Millionverifier went through a rebrand, finding verified reviews is a bit of a chore. However, the handful of reviews that exist out there state that customer support is okay. Nothing more than that though, and there is a complaint that the live chat does not function 24/7, which can be a challenge for customers around the globe.

In this area, Zerobounce just shines. If you take a look at websites such as G2 and Capterra, there are many positive reviews for Zerobounce and they all praise their customer service. They are fast, helpful and easy to get in touch with through a variety of different channels.

The verdict: Zerobounce is the better tool in terms of customer support.

An alternative to Millionverifier and Zerobounce to amp up your email marketing

They say you can’t have your cake and eat it too. Well, we disagree. With Bouncer, you get all of the key features of Millionverifier and Zerobounce in one place, at a lower cost, with a more intuitive user interface.

Bouncer is packed with great features: email verification API, bulk list cleaning, support for email marketing tool integrations, toxicity check and much more. On top of the real-time API, there is even a deliverability kit that will help resolve your deliverability issues and improve your email marketing efforts.

Bouncer features

The toxicity check is a tool that analyzes your email lists and identifies if they contain toxic emails. In short, there are toxic emails that circulate the World Wide Web and damage
your sender reputation. With Bouncer, you can identify and remove them in one fell swoop.

Bouncer reports an accuracy of 99.5%+. We’re also SOC2 compliant so your data is safe at every point of the bulk email verification.

Prices start as low as $0.0015 per email, making Bouncer one of the cheapest ways to get verified email addresses out there. The free plan for our email verifier gives you 100 credits to test the tool out.

In short, get ready to have your cake and eat it, because Bouncer does everything that Millionverifier and Zerobounce do, but better and cheaper.

Bouncer CTA

Wrapping up

Both Millionverifier and Zerobounce are capable tools to help you validate email addresses and power up your email marketing campaigns. Zerobounce comes off as a more expensive, but also more complete tool with better customer support and user experience.

However, as we’ve shown, neither of them is ideal and there are certain downsides that you need to live with. Or do you?

Sign up for Bouncer instead. You’ll get a wide range of features, excellent customer support, top-of-the-line accuracy and all of that at an amazing price. Grab your free trial today!

Frequently asked questions

Which tool is more expensive, Millionverifier or Zerobounce?

If you want to save some money on email verification and overall email marketing costs, it’s best to go with Millionverifier.

To validate 10,000 emails in Millionverifier, it will cost you $37.

To do the same bulk validation process in Zerobounce for 10,000 emails, it will cost you $61.

In short, Zerobounce is a lot more expensive and Millionverifier offers better value for money. By comparison, validating 10,000 emails in Bouncer costs $40 or $50, depending on the plan you choose. It’s slightly more expensive than Millionverifier, but you get better email verification accuracy and more security, with massively better customer support.

Which tool is more accurate?

Both email validation tools claim a 99% email verification accuracy. However, research shows that Zerobounce is more accurate overall, while Millionverifier has issues with certain types of addresses. If you’re looking for an online email validation system that is even more accurate, Bouncer is your friend.

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