Best Free Email Validation Tool for Your Email List

Most businesses use email marketing to attract new customers and engage existing ones. To achieve high open and click-through rates, they must regularly scan their lists to remove invalid addresses, which is easy to do with the free email validation tools listed in this article.

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Top 6 Best Free Email Validation Tools

When selecting free email address validation tools for this article, we focused not only on their performance but also usability, security, and customer support.

While each of the six email list validation tools described below can validate emails for free, you won’t be able to access all features and verify an unlimited number of lists without upgrading to a paid subscription plan, so keep that in mind when making your choice.

1. ZeroBounce

Are you tired of poor email deliverability scores and underwhelming marketing campaign ROIs? Then you should definitely try ZeroBounce, a popular email validation tool that uses artificial intelligence to separate valid contacts from invalid ones.

When you perform email validation with ZeroBounce, each contact in your list of email addresses gets assigned a quality score that tells you how likely that person will engage with your emails. You can also test the deliverability of your emails to discover which of them are likely to end up in the spam folder, which is essential for avoiding ending up on email blacklists. All these and more features are available at affordable prices, and you can choose between a pay-as-you-go model or a monthly subscription.

👍🏼   Pros:
  • Excellent accuracy
  • 100 free weekly email verification credits
  • Straightforward user interface
  • AI-powered email scoring system
  • Responsive customer support staff
👎🏼   Cons:
  • File uploads occasionally take a while to finish


Enter the email address using the form below and try how ZeroBounce works.

2. MillionVerifier

MillionVerifier is our favorite email list validation tool because it delivers the best value for money. The service is known for its 99% accuracy rate and low prices. You can purchase 1 million verifications for just $299, which is just half of what most other similarly accurate validation tools charge.

MillionVerifier makes it possible to get started with email validation free of charge in less than a minute. You simply need to create an account and upload your first list of addresses—no need to provide your credit card details. All EU-based businesses will be happy to discover that MillionVerifier complies with GDPR and its strict privacy guidelines.

👍🏼   Pros:
  • Price
  • Excellent value
  • Ease of use
  • High accuracy
👎🏼   Cons:
  • Doesn’t offer 24/7 Support


3. Pabbly Email Verification

Pabbly Email Verification is a free bulk email validation tool with an attractive user interface. The tool makes it easy to improve the performance of marketing campaigns by deleting duplicate emails, detecting spam traps, running scans against High-Risk Keywords and TLDs, and getting rid of addresses with syntax errors.

One thing that virtually all users love about Pabbly is that the customer support staff always responds to messages within 12 hours during all working days. What’s more, its live chat support is available between 10:00 AM and 6:00 PM IST, so there’s no reason to worry about running into some issue and not being able to solve it.

👍🏼   Pros:
  • Excellent customer support
  • Generous free plan
  • Plain and simple user interface
👎🏼   Cons:
  • Does not always filter out “catch-all emails”


4. NeverBounce

This free email verifier is trusted by over 125,000 users, who enjoy its quick validation process and flexible pricing. You can pay as you go based on the number of addresses you validate, or you can pick a subscription plan for a nice volume discount. NeverBounce excels at processing large volumes of messages, stating that it can process 10,000 emails in just 2 to 10 minutes. As such, you can complete an average 100,000 email job in just 45 minutes.

NeverBounce integrates with many different CRMs and marketing automation tools, including Campaign Monitor, Active Campaign, Drip, HubSpot, Insightly, Mailchimp, OnePageCRM, Paperform, Salesforce, and others. We just wish it left behind fewer unverified addresses.

👍🏼   Pros:
  • Modern and simple user interface
  • Quick validation process
  • Flexible pricing
👎🏼   Cons:
  • Leaves a lot of “unverifiable” addresses


5. MyEmailVerifier

If you’re looking for an easy to use free email validation tool that’s trusted by more than 10,000 users around the world, then MyEmailVerifier is a great choice. Its prepaid plans make budgeting simple, and the free plan includes 100 email credits, which is enough to test all features and learn how well the service performs.

What’s more, users can request 500 extra free email credits just by sending a message to the support team, 2,500 extra credits for sharing their experience on social media like Facebook, Twitter, and LinkedIn, 5,000 extra credits for leaving a review on a review site, and, finally, 10,000 extra credits for creating a short video testimonial.

Speaking of features, MyEmailVerifier does everything from syntax verification to domain/MX record checking to spam trap detection, and more. Its validation system works great with Yahoo addresses, which is something many other free email verification services struggle with. MyEmailVerifier offers a 98% deliverability guarantee, and it claims that 99% of its customers are satisfied with the service it provides.

👍🏼   Pros:
  • Very easy to use
  • Reliably validates Yahoo addresses
  • Offers a decent number of free credits
👎🏼   Cons:


6. Mailfloss

Mailfloss is an accessible free validation tool that can automatically remove hard bounces, fake addresses, and addresses with spelling mistakes from your lists. It has a straightforward user interface that exposes all important features at a glance, allowing even inexperienced marketers to scan for invalid addresses with ease.

It takes just 60 seconds to get started, but be ready to wait a while to receive the cleaned list. At the time of writing this article, Mailfloss supports virtually all major email service providers, including MailChimp, Ontraport, Constant Contact, HubSpot, Campaign Monitor, AWeber, and others. Since there are no commitments and no contracts, you don’t need to think twice about purchasing a subscription plan since you can ask for a refund at any time during the first 30 days and get your money back.

👍🏼   Pros:
  • Fast customer support
  • Easy to get started with
  • Automatic removal of bad addresses
👎🏼   Cons:
  • Slower response times



The best free email validation tools reliably catch most invalid addresses while being intuitive enough so that even inexperienced marketers can use them without much effort. In this article, we’ve listed six tools that meet these criteria, describing the pros and cons of each. All you have to do to start verifying your lists is pick one.

Free Email Validation Tool - FAQs

What is the difference between free and paid email validation tools?

The truth is that most email validation tools offer both free and paid subscription plans, allowing you to test how they work without forcing you to make an upfront commitment.

What is the best free email validation tool in 2021?

MillionVerifier is the best free email validation tool available in 2021 because it delivers the highest accuracy at the lowest prices.

How do free email validation tools work?

Free email validation tools perform several different kinds of checks to catch all invalid email addresses. For example, they look for spelling mistakes, syntax errors, known spam traps, and problems with DNS records.

How often should I use an email validation tool for my list?

Most experienced marketers recommend using an email validation tool at the start of every campaign and at regular intervals during the campaign.

Clean Email Team Updated on Nov 30, 2021