Choose an Email Verification Tool to Improve Your Email Deliverability

Email verification services and tools help achieve high deliverability rates because marketers that regularly clean their lists see low bounce rates, which, in turn, increases their ROI on marketing campaigns. We reviewed the top 20 email verification tools of 2021 for inexperienced and seasoned marketers alike to help you make the best choice.

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How to Choose the Best Email Verification Service

The best validation service is the one that fits all, or at least most, of your needs and has the highest accuracy rate at detecting invalid, undeliverable, and spam email addresses. The service should, at a minimum, check for correct syntax, catch-all servers, domain authentication, and SMTP authentication.

Other features that you may want to consider in a provider include:

Top 20 Best Email Verification Services and Tools

When choosing the best email verification services and tools for this article, we looked at performance, usability, price, user reviews, and our own experience. Virtually all email verifying software solutions listed in this article offer a free plan, so nothing is stopping you from trying one of the best free email validation tool providers before you settle on one to buy.

1. ZeroBounce

Price: from $15 per month (free plan available)

ZeroBounce is an award-winning email verification software tool that seamlessly integrates with many popular marketing platforms, including Cloudflare, Mailchimp, and Constant Contact. ZeroBounce claims a 98% accuracy rate and uses an artificial intelligence scoring system to determine if the addresses in your marketing list are active. It does a great job of removing non-existing and misspelled addresses. It can also accurately catch and remove spam traps, known abusive addresses, and addresses from domains that don’t accept mail.

ZeroBounce best email verifier tool

ZeroBounce also offers a deliverability test so that you can fix misconfigurations before you send messages to your mailing list. Plus, ZeroBounce can monitor your list and check your status with blocklisting companies so that you know which company to contact to be delisted.

All new users can register in seconds and instantly get 100 free email validation credits, and each validation costs one credit. Additional credits can then be purchased in convenient bundles based on how many emails you want to validate. The more credits you buy at once, the lower price per email you'll pay.

👍🏼   Pros:
  • Generous free plan
  • Reliable performance
  • Affordable
👎🏼   Cons:
  • Confusing initial setup

2. Pabbly Email Verification

Price: from $5 for 1,000 verifications

We like Pabbly because the service is accurate and affordable, but at a slower speed. For $5, you get 1,000 verifications, which is a great price considering how much some of its competitors charge. Pabbly’s slower speed results in fewer errors and up to 98% deliverability success. Pabbly uses a manual and human-involved process that guarantees better results than the competition. So far, Pabbly has prevented over 720 million bounces, and its developers are dedicated to constantly making the service better.

Pabbly best email verification tool

Pabbly achieves such great results by combining standard automatic verification with human-like pings. What are human-like pings? Essentially, they are regular pings sent with a slower frequency, mimicking the response time of real human beings. By sending ping requests at a slower speed, Pabbly can avoid false positives to keep your mailing lists as large as possible.

👍🏼   Pros:
  • Scalable, affordable pricing
  • Instantly removes duplicate entries
  • Anti-grey listing technology
👎🏼   Cons:
  • Does not always filter out catch-all addresses

3. GetEmail.io

Price: from $49 per month (free plan available)

GetEmail.io is the best way to test email deliverability for professional marketers. It’s used by some of the largest companies in the world, including Oracle, IBM, Google, and Shopify. The secret to GetEmail.io’s success is its big data and machine learning algorithms. These algorithms can reliably find bad mail addresses in seconds, leaving marketers with fully optimized lists. Anyone can try GetEmail.io for free to see first-hand how it works.

GetEmail.io email verification service

The people behind this excellent email verification tool have painstakingly crawled the web, looking for as many addresses as possible to build one of the most comprehensive email databases there is. Because of this database, mail verification with GetEmail.io takes only a few seconds, not minutes or hours. If this sounds great, give GetEmail.io a try for free to see if this is the right email verification tool for your marketing campaigns.

👍🏼   Pros:
  • Free plan
  • Big data and machine learning algorithms
  • Excellent customer support
  • Very fast scanning speed
👎🏼   Cons:
  • Expensive

4. DeBounce

Price: pay for what you use (starts at $10 for 5,000 verifications)

Based in India, DeBounce is a polished email verifying software tool that can minimize bouncing by removing addresses from disposable mail providers, addresses with syntax errors, addresses that are present more than once, and more. It stands out with its remarkably simple three-step verification process, making it perfect for less experienced marketers who are just getting started with email verification. You can integrate it with WordPress, Zapier, Drip, ActiveCampaign, and a host of other services.

DeBounce best email verification service

DeBounce is one of the best-rated email verification software tools out there, enjoying a respectable rating of 4.8 out of 5 stars on Trustpilot. Besides its performance and features, the excellent rating can also be attributed to DeBounce’s responsive and helpful customer support staff, which is always quick to resolve issues via email, never taking more than 24 hours to reply.

👍🏼   Pros:
  • Easy to use
  • Many third-party integrations
  • Positive user reviews
  • Excellent customer support
👎🏼   Cons:
  • Doesn’t offer subscription plans

5. MyEmailVerifier

Price: pay for what you use (starts at $1.44 for 500 verifications)

If you’re looking for software to verify email addresses and improve email deliverability without purchasing a subscription plan that you may or may not use to its full potential, check out MyEmailVerifier. MyEmailVerifier uses a pay-for-what-you-use pricing model that starts at $1.44 for 500 verifications. And if that isn't enough, you can also activate a free trial to test what it can do.

MyEmailVerifier email verification service for 2021

According to MyEmailVerifier’s own customer satisfaction statistics, more than 99.9% of customers are happy with this email verification tool, and we have no reason to doubt this statistic. MyEmailVerifier performs all the checks you'd expect, along with offering a real-time API, low turnaround time, role-based email address detection, and spam trap detection.

You can test whether MyEmailVerifier lives up to its promises by creating a free account and verifying up to 100 addresses without paying. Additional verification credits can be earned by joining the official discussion board, sharing your experience on social media, or creating a video testimonial of at least 1 minute.

👍🏼   Pros:
  • Budget-friendly pricing
  • 99.9% customer satisfaction
  • High-performance real-time API
👎🏼   Cons:
  • The free trial is greatly limited

6. NeverBounce

Price: from $10.00 per month (pay-as-you-go pricing is also available)

NeverBounce is one of the most user-friendly tools to verify email addresses. It has more than 125,000 users around the world, and most of them swear by its excellent bulk list cleaning capabilities, which can ensure up to 99.9% deliverability. Verification with NeverBounce happens in real-time, so you instantly see which addresses are valid and which need to be discarded.

NeverBounce email verification tool for 2021

At the time of writing this article, NeverBounce offers more than 80 integrations with various marketing platforms, making it a breeze to tap into your existing mailing list and make it better. Examples of popular third-party integrations include Mailchimp, Marketo, Drip, HubSpot, Campaign Monitor, and Salesforce. New integrations are being added on a regular basis, so just because your favorite platform isn’t currently supported doesn’t mean that it will never be.

👍🏼   Pros:
  • User-friendly
  • Ensures up to 99.9% deliverability
  • Offers both subscription plans and pay-as-you-go pricing
  • Supports many third-party integrations
👎🏼   Cons:
  • Sometimes marks emails as “unverifiable”

7. mailfloss

Price: from $17.00 per month

mailfloss is an automatic email verification software solution that’s meant to prevent fake and invalid addresses from lowering the ROI of your marketing campaign. Whereas many other similar email verification services simply discard misspelled addresses, mailfloss fixes many common typos and automatically syncs them with your service provider. It takes around a minute to create an account and set everything up, and you can get started right away, thanks to the free trial.

mailfloss tool to verify emails in 2021

Unlike many other email verification service providers, mailfloss doesn’t require its users to make a commitment before they are ready to spend their hard-earned money. Instead, you get 30 days to thoroughly test what it has to offer. If you are dissatisfied with it, simply cancel your subscription and request a full refund—no questions asked.

👍🏼   Pros:
  • 7-day free trial
  • Fixes common types of errors
  • Integrates with third-party marketing services
👎🏼   Cons:
  • Unintuitive user interface in certain areas

8. DataValidation

Price: from $35 for 5,000 verifications (free plan available)

With DataValidation, it’s easy to get rid of all bad addresses and improve marketing results. The service is trusted by many large organizations, but it also meets the needs of regular marketers. You can integrate Data Validation with your website or app thanks to its industry-leading API, which supports real-time and free bulk email verification. Your data is backed up to the Google Cloud to ensure high scalability, low latency, and global availability.

DataValidation service to verify emails in 2021

DataValidation offers around-the-clock customer support with chat and email, so you can rest assured, knowing your questions won’t go unanswered for too long. Still, you don’t have to wait for a customer support professional to help you. Browsing DataValidation’s extensive knowledge base to find the right answer to most any question is as easy as it gets.

👍🏼   Pros:
  • Industry-leading API
  • Excellent performance
  • Import lists from your mail service provider
👎🏼   Cons:
  • Doesn’t immediately display verification results

9. Xverify

Price: pay for what you use (no minimum requirements)

Xverify is a trusted email verification tool with EU-based data centers and built-in protection against fraud. This tool is particularly suitable for European marketers who want to improve deliverability by eliminating hard bounces, reducing spam complaints, and minimizing fraud. What we really like about Xverify is its flexible pricing structure with no minimum requirements. And Xverify offers 100 free verifications so that you can give the service a try.

Xverify best service to verify emails in 2021

If you have lots of email addresses to clean up, take advantage of Xverify’s batch uploading feature and either submit your emails using the drag-and-drop interface or upload them directly via FTP. To minimize the need for future email verification, tap your email form directly into Xverify’s API to throw invalid email addresses out the window.

👍🏼   Pros:
  • EU-based data center
  • Built-in fraud protection
  • 98% accurate across all major email domains
  • Batch uploading
👎🏼   Cons:
  • Larger lists take a long time to complete

10. Verifalia

Price: from $9 per month for 250 email verifications per day (free plan available)

Out of all software to verify email addresses described in this article, Verifalia is probably the least popular solution, but that doesn’t mean that it’s the worst. Verifalia offers comprehensive syntax validation, domain/MX/DNS check, spam trap detection, catch-all server detection, mailbox availability check, disposable email detection, and more. The tool is secure by design in accordance with the world’s strongest data privacy laws, and its servers are located in Germany.

Verifalia best tool to verify emails in 2021

Since its launch in 2005, Verifalia has helped over 35,000 customers around the world significantly reduce their bounce rate, and it can do the same for you. If you’d like to test its accuracy and see what makes it one of the best email verification service providers out there, try its free email address validator, which lets you quickly validate a single email address.

👍🏼   Pros:
  • Has been around since 2005
  • Real-time verification API
  • Secured by HTTPS/TLS
👎🏼   Cons:
  • Not nearly as popular as other verifier tools described in this article

11. MillionVerifier

Price: from $59 for 50,000 verifications as a one-time payment (free plan available)

Founded by email verification guru Tamas Szabo, MillionVerifier is a highly accurate email verifier tool that won’t break your bank. You can purchase 50,000 verifications for $59, and purchased credits never expire. Thanks to frequent promotional offers, it’s possible to get up to 30% extra credits for free for one week and more.

MillionVerifier best software to verify emails in 2021

Besides being competitively priced and affordable, MillionVerifier is also exceedingly customer-friendly. All new users enjoy a 100% money-back guarantee, as well as real-time chat support that typically answers all questions within 60 minutes. These and other reasons are why MillionVerifier is rated 4.5 out of 5 on Trustpilot.

A benefit of being a MillionVerifier user is the free access to EmailAcademy. EmailAcademy offers courses and a toolkit for email marketers. The courses are great for new marketers and those that want to expand their skills. The toolkit includes an email verifier, bounce code analyzer, image converter, HTML email templates, and blocklist monitor.

👍🏼   Pros:
  • Attractive prices
  • Outstanding verification accuracy
  • 100% money-back guarantee
  • Verification credits don’t expire
👎🏼   Cons:
  • The casino-style look and feel isn’t for everyone

12. QuickEmailVerification

Price: from $4 for 500 verifications as a one-time payment (free plan is available)

QuickEmailVerification is an affordable email verifying software that’s trusted by over 90,000 businesses of all sizes. With its help, you can verify both existing lists of email addresses as well as perform real-time email address verification by tapping into QuickEmailVerification’s API. Regardless of the approach you choose, you can always look forward to stellar accuracy and fast processing.

QuickEmailVerification best software for email verification

QuickEmailVerification is great for small business owners and entrepreneurs who are getting started because its free plan offers 100 free credits every day while providing access to all key features, including support for multiple upload formats, anti-greylisting technology, in-depth verification reports, and encrypted storage.

👍🏼   Pros:
  • Generous free plan
  • Complies with GDPR
  • Stores all user data in encrypted storage
👎🏼   Cons:
  • Customer support only via email

13. CaptainVerify

Price: from $7 for 1,000 verifications (you can ask customer support to trial the service)

CaptainVerify won’t win any prize for its performance, which is rather underwhelming. Still, there are reasons why it deserves a place on this list of the best email verification tool providers. To start, the service performs many different verifications to thoroughly clean up your email databases and improve your deliverability.

CaptainVerify best tool for email verification

It does this while employing a simple pricing model that’s as transparent as it gets. While CaptainVerify doesn’t explicitly advertise a free plan, we know that you can ask its customer support for a free trial to receive 100 verification credits free of charge.

👍🏼   Pros:
  • Available in several languages
  • Simple pricing model
  • Plenty of features
👎🏼   Cons:
  • Fairly slow verification process

14. MailboxValidator

Price: from $19.95 for 1,000 validations (free plan available)

MailboxValidator is no-frills software to verify email addresses that’s as simple to use as it is affordable. To get started, all you do is upload your mailing list in either a text or CSV format and let the software do its job. After a short while, you will receive your results. According to MailboxValidator, it takes about a day to validate 500,000 emails, so most users won’t have to wait for more than an hour considering how large the average mailing list is.

MailboxValidator best service for email verification

MailboxValidator validates that email addresses conform to a standard format, checks for the existence of mail server records in the DNS, checks to see if the mail address is from a disposable mail provider like Mailinator, tests for a successful network connection to the mail server, and much more.

👍🏼   Pros:
  • Full integration with major platforms
  • Demo versions
  • Extensive resources for developers
👎🏼   Cons:
  • Customer service could be better

15. EmailListVerify

Price: from $4 for 1,000 verifications (free plan available)

EmailListVerify presents itself as a cost-effective alternative to the best email verification services. It offers the same features at a more attractive price. Like any respectable email verification service, EmailListVerify verifies emails by performing domain and SMTP validation, spam trap identification, hard bounce and syntax error checks, and more. According to its own data, which is based on more than 5 billion verified emails, it can ensure 99% deliverability.

EmailListVerify best service for email validation

EmailListVerify saves you even more time by integrating with your favorite email service, including Mailchimp, AWeber, MailerLite, Gist, and others. If your days are spent verifying email addresses, consider the monthly subscription plans, which start at $139 for 5,000 emails per day. With a monthly subscription plan, you can save up to 50% and never worry about purchasing additional credits again.

👍🏼   Pros:
  • Claims 99% accuracy
  • Guarantees zero false positives
  • Clean and simple web interface
👎🏼   Cons:
  • Occasionally confusing user interface

16. Clearout

Price: from $21 for 3,000 credits (free plan is available)

Trusted by more than 20,000 multi-sized businesses, Clearout is a likable email verifier tool that removes bad email addresses by performing an array of complex checks, looking for spam traps, hard bounces, blocklisted domains, and other enemies of email deliverability. You don’t need a credit card to try it. All you do is sign up and enjoy 100 free email verification credits.

Clearout best tool for email validation

If you decide to purchase additional credits, you can choose between a one-time credit purchase or a monthly/annual subscription. The subscription model can save you up to 30%, but it starts at 10,000 email verification credits per month, so it’s not really suitable for marketers who are just beginning to work on their mailing lists.

👍🏼   Pros:
  • Can proactively identify potential B2B leads
  • Integrates with popular services
  • Lets you verify up to 100 emails free of charge
👎🏼   Cons:
  • Third-party integrations can be tricky to set up

17. Email Checker

Price: from $14 for 1,000 credits as one-time payment (free plan is available)

Email Checker is one of the best email verification tools because it has already verified around 20,000,000,000 (that’s right!) mail addresses and prevented more than 1,300,000,000 bounces. Its comprehensive email verification engine performs a wealth of checks to detect everything from syntax errors to domain name issues to known spam traps.

Email Checker best tool for email validation

Email Checker’s user experience revolves around a drag-and-drop style dashboard. This dashboard is straightforward to use, but it’s not all that visually appealing. What’s appealing, however, is the fact that you can choose between one-time payments and monthly subscriptions. As such, Email Checker should be able to meet your needs regardless of whether you’re an aspiring entrepreneur or an established marketing company.

👍🏼   Pros:
  • Simple bulk email verification
  • Integrations with e-commerce platforms
  • Automatic correction of typos
👎🏼   Cons:
  • Basic user interface that’s not visually appealing

18. Hunter Email Verifier

Price: from $49 a month for 1,000 verifications (free plan available)

Hunter Email Verifier is simple email verifying software offered as part of Hunter’s suite of email tools, which also includes an email finder that lets you quickly and easily find the email address of a professional or company. Unlike standalone software to verify email addresses, Hunter Email Verifier focuses mostly on the basics: bulk and API email verifications.

Hunter best email verification tool

As a user, you can effortlessly upload a list of email addresses and have Hunter Email Verifier perform multiple verifications on it, including comparison with its unique database of 100+ million professional email addresses. The free plan lets you check 50 addresses a month and perform 25 email searches.

👍🏼   Pros:
  • Free single email verification
  • Email verification API
  • Web browser extensions
👎🏼   Cons:
  • Doesn’t integrate with major platforms
  • No one-time purchase option available

19. Bouncer

Price: from $5 for 1,000 verifications (free plan is available)

Bouncer is one of the best email verification tools for people who appreciate flexible pricing and GDPR compliance. Getting started with it is easy thanks to its intuitive user interface. We just wish the interface felt a bit more modern because it’s starting to show its age.

Bouncer best email verification service

You can integrate Bouncer with services like Mailchimp, Moosend, Woodpecker, ConvertKit, GetResponse, and others. Should you run into any problems when using the service or integrating it with the rest of your marketing toolkit, contact Bouncer’s outstanding customer support staff, which is available via chat, email, and video call.

👍🏼   Pros:
  • Intuitive user interface
  • Easy-to-integrate email verification API
  • Flexible verification credit packages
👎🏼   Cons:
  • Somewhat outdated user interface

20. VerifyBee

Price: from $19 for 2,500 verifications (free plan available)

Are you looking for the best email verification service that won’t break your bank? If so, VerifyBee should definitely be included on your shortlist. Why? Because it starts at just $19 for 2,500 verifications, which is less than half of what, for example, ZeroBounce charges. And if you purchase a large number of email verification credits at once, you can save even more money.

VerifyBee best email verification software

Still not convinced? Then you should also know that VerifyBee integrates with all leading marketing services, allowing you to streamline email address verifications and save time. The tool’s user interface has been designed from the ground up with the latest user experience guidelines in mind, so you’re never left guessing what option to click next.

👍🏼   Pros:
  • Inexpensive pricing
  • Great user experience
  • Easy to integrate with other marketing software
👎🏼   Cons:
  • The verification process takes some time

Conclusion

With the best email verification tools described in this article, you can quickly and efficiently get rid of misspelled and invalid addresses that are polluting your marketing lists and making it difficult to achieve a positive ROI on your campaigns. Regardless of which email verification tool you choose, make sure to use it regularly to always maintain the highest deliverability possible.


Email Verification Services – FAQs

Why do I need to use email verification service?

It’s important to use an email verification service because a certain percentage of collected addresses either don’t work right away or become inactive over time.

How do email verification tools work?

Email verification tools apply different checks (address syntax check, domain records check, spam trap detection, and so on) to confirm that an email address is working and belongs to a real user.

How can an email verification tool can boost open rates?

Ideally, you want your marketing messages to be opened by each and every recipient, and that’s possible only when you take the time to remove misspelled and invalid addresses, which is exactly what an email verification tool does.

What are the best email verification services?

The best email verification services, such as GetEmail.io, ZeroBounce, and DeBounce, offer excellent performance, usability, and attractively priced subscription plans.

How can I verify an email address?

You'll need an email verifier or checker. Several email verification services (such as ZeroBounce and MyEmailVerifier) provide this tool on their websites so that you can test the service and see the results the service provides. All you do is enter the email address and the service tells whether the address is valid.

What is an email validation service?

Email verification services are a way to check your mailing list to ensure your campaign mailings reach your intended audience. When you validate email addresses, you'll know the address has the correct syntax, the domain and SMTP servers are authenticated, whether the address is a spam trap, and other information needed to ensure your mailings don't bounce.

Are email verifiers safe?

Most email verifiers use secure email validation. This security includes the use of military-grade data encryption and GDPR compliance. Before you use one of the email verification services, read the service's privacy policy.

Coletta Teske Whitehead Updated on Oct 25, 2021
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