Free Email Verification Service: How to Choose One for 2021

If you’re using email campaigns to reach your prospects, you’re in good company: 87% of marketers are doing the same, and given that email can deliver up to a 4400% ROI, it’s easy to see why. However, even though it’s one of the cheapest methods of marketing, email isn’t without its risks.

For starters, if you have dirty data, your emails aren’t going to reach the intended audience. You could end up in the SPAM folder, where your message is likely to go ignored. And if you’re sending messages to nonexistent addresses, your bounce rate increases and your sender score could suffer.

The remedy for all of the above is to use a free email verification service that can help you clean up your mailing lists and reach more people successfully. Here’s what you need to know about this noteworthy tool and how to go about choosing the best one for your needs.

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Criteria for Choosing a Free Email Verification Service

Email verifying tools can be an important step in a successful email campaign. To understand what to look for in a verifying software, you should first consider how they work.

An effective free email verification web service should do the following:

Ideally, your tool should also remove any duplicates so you’re not double-sending your campaigns. This is an annoyance to your end user, plus it could increase your costs if you’re paying by the address.

Also, your free bulk email verification tool should be scalable. As your mailing list grows, your validation service should be able to accommodate more addresses.

Now that you know some of the most important things to look for, here’s a quick rundown of our favorite tools for free email verification software.

4 Best Free Email Verification Tools to Try

Many email verification tools offer similar functionality. Here are some more details on our top picks and why we chose them.

1. ZeroBounce

Overall Rating: 4.9/5

Price: 100 free credits / Plans starting at $16

About: This award-winning email verifier tool strikes a great balance between price and reliability, offering a 98.8% accuracy rating.

What We Love: Aside from easy pricing and no contracts, ZeroBounce also includes an email scoring feature so you can see at a glance how valid (and valuable) your mailing list is. We also love that credits never expire, so you can keep your investment even when your marketing campaign is put on hold.

What We’d Like to Change: ZeroBounce only accepts .csv and .txt formats, so it might take you some time to prep your list for validation.

2. Neverbounce

Overall Rating: 4.9/5

Price: Try for Free / $0.003+ per email

About: Used by some of the top tech companies and major brands in the world.

What We Love: Neverbounce is one of the most accurate free email verification software you can get, with a promise of delivering up to 99.9% of your emails. We love its real-time capabilities and automated list cleaning, both of which are huge time-savers when trying to meet strict campaign deadlines. You also get 1,000 free verifications when you sign up.

What We’d Like to Change: It’s not completely free, so it might not be the best solution for bigger lists. However, once you use up the free credits, credits start at just $0.003 each, so it is affordable.

3. MyEmailVerifier

Overall Rating: 4.8/5

Price: 100 free credits / Packages start at $1.44 for 500 credits

About: MyEmailVerifier’s biggest feature is its real-time API, which is perfect for companies that send high volumes of marketing emails each day.

What We Love: Something that jumps out immediately is the fact that you can get your 100 credits without pulling out a credit card. This is a great way to try it out before you commit to a plan. When it’s time to upgrade, you can pay as you go instead of being locked into a pricey recurring subscription.

What We’d Like to Change: MyEmailVerifier’s success rate is 98%, which is wonderful but isn’t quite the best.


Overall Rating: 4.2/5

Price: 50 free credits / $39 per month

About: is a full-service outreach platform, with mailing list validation being part of its structure.

What We Love: The simplicity of the list validation feature is super helpful. You can upload a file (e.g. Google Sheet, CSV, etc.) or a page of scraped contacts from LinkedIn, and does all the heavy lifting. You can also build your email drip campaigns directly in the platform, which can save you a step once your list has been verified.

What We’d Like to Change: The results from the validation process can only be obtained with a paid plan, so it’s not a truly free platform. If you’re looking for a verification tool only, this might not meet your needs.

Improve Your Send Rates with Free Email Verification Online!

Email verification tool creators have been generous in sharing their technology for free. Now, all you have to do is choose the right tool to improve every campaign. And since you only have something to gain, why wouldn’t you take the next step? Get email verification service free and watch how it transforms your ROI!

Free Email Verification Service - FAQs

1. What is the best free email verification service?

The term “best” is highly subjective. But if you’re looking for a list validation service that’s highly accurate and trusted by thousands of users, then you’ll want to look at Zerobounce. They’re our top pick for list validation because they have a 99.9% success rate. You can try them for free, plus they remove duplicate emails and bad syntax for free, too.

2. How can I find the owner of an email address for free?

If you’re looking for the owner of a mail address for free, use a tool like Neverbounce or This is the single fastest way to clean up your mailing list and make sure you’re sending the right message to the right person.

3. How do free email verification services differ from the paid ones?

Many software tools come in a free and paid version, with paid versions offering more features and functions. This is also the case with free list validation services. You can usually process more addresses with a paid version. Also, some free versions only let you try it out once rather than providing ongoing access.

4. What happens if you send an email to an address that doesn't exist?

When you’re sending email to bad addresses, it will “bounce” back to you as undeliverable. If this happens once, it’s not a big deal. But if you continue sending messages to nonexistent addresses, it could lower your sender score, which makes you more likely to end up in SPAM folders. It’s best to clean up your mailing list and improve your deliverability before you click Send.

Clean Email Team Updated on Nov 30, 2021