11+ Best Email Verification Tools to Have a Better Email List

Updated: June 30, 2021


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Email verification is the process of confirming the validity of an email address. It is a must-do task in email marketing and is also known as email list cleaning and validation.

Anyone can make a mistake when writing an email address, and as a result, the email address becomes invalid. Emails sent to invalid email addresses bounce, lowering the deliverability score during email marketing campaigns.

Email bounce rates should be lower in order to achieve a positive ROI on email marketing campaigns. Therefore, the email verification process is used to reduce email bounce rates. The end result will be a higher deliverability rate and protect your email server’s reputation.

In this article, let’s see the 11+ best email verification tools on the market that you can use to remove bad apples from the email list. With a healthy list, your result with email marketing will get significantly better. Let’s get started.

Table of contents:

How does an email verification tool work?

The legitimacy of an email address can be determined using a combination of validation techniques and proprietary algorithms, depending on the internal database. Any invalid addresses will be filtered out at the end of the list validation process, leaving a clean, fully deliverable email list ready for marketing and business needs.

To learn more about the email verification process, you can read How to verify email addresses.

For an email verification tool, it uses an email validation process to separate the bad from the good. Its steps behind the loading screen is something like this:

  1. Remove improperly formatted email addresses by scanning the syntax.

  2. Verify the DNS entries of email addresses and identify invalid ones.

  3. Detects role-based accounts such as [email protected], [email protected], [email protected], [email protected], etc. - which can negatively affect deliverability.

  4. Detects and processes disposable/throwaway email addresses.

  5. Detects BOTs, spam seeds, blacklisted, honeypots, and bogus email addresses.

  6. Check DNSBls and URI DNSBLS to find email addresses with Ips often used for spamming.

  7. Performs deep-level SMTP verification on each email address.

With such a fool-proof email verification process like that, email verification tool is a fantastic way to have a better email list quickly.

11 Best email verification tools

The following is a list of the best email list cleaning and email validation services as determined by my ongoing exhaustive research. Please keep in mind that variable listing fees may have an impact on your position on the list. This compensation, however, has no bearing on the review process.

#1. Mail Floss

Mail Floss
Mail Floss

Mail Floss is a straightforward email verification tool that integrates with a wide range of email marketing service providers and allows you to bulk-verify your email list.

Its primary goal is to automate the process of email verification so that you can focus on your business. It works with a wide range of email providers, including MailChimp, AVADA, ConvertKit, Sendinblue, Mailerlite, and others.

Invalid addresses, duplicate emails, temporary emails, and spam traps are all detected by Mailfloss. It also removes emails that have hard bounces and checks for syntax errors.

Mail Floss’ best features:

  • Large email list verification – Connect your email marketing service provider or upload your list as a CSV file and let the tool handle the cleaning for you.

  • Daily cleanups - Mail Floss automatically cleans up your email list on a daily basis for email marketing services that you connect to the tool.

  • Whitelist/blacklist options – Customize the cleaning process of the tool by creating your own whitelist and blacklist options.

  • Integrations – Mail Floss directly connects with a large number of email marketing service providers. Zapier allows you to connect even more platforms.

  • Manage deleted emails – Select which emails should be deleted or unsubscribed from your list. This prevents the tool from removing emails that you are certain are valid.

Mail Floss’ pricing:

Mail Floss allows for one-time bulk verifications as well as monthly subscriptions. Subscriptions begin at $17 per month for up to 10,000 email verifications and go up to $200 per month for up to 125,000 email verifications.

If you pay annually, you will receive two months free, and all plans include a seven-day free trial.

You can buy credits if you don’t want to pay monthly, have more than 125,000 emails to verify, or use an email marketing service provider that isn’t officially supported by Mailfloss.

#2. EmailListVerify


EmailListVerify is a popular email verification tool that is used by some of the most well-known companies in the world, including MailChimp, Shopify, and Rackspace. During their time in business, they have scanned over 5 billion email addresses.

EmailListVerify runs a number of checks to identify and remove invalid email addresses from your list. Emails associated with invalid, inactive, or parked accounts, as well as temporary and duplicate emails, are deleted.

Additionally, the tool looks for spam traps, syntax errors, and emails with high bounce rates.

EmailListVerify’s features:

  • Bulk email list verification – Upload your email list in a variety of ways and receive a clean list with a deliverability rate of more than 99 percent. Single email verifications are also available.

  • Email verification API – Integrating this API into your website’s registration, opt-in, and contact forms eliminates invalid email addresses in real time by blocking form submissions unless the user enters a valid email address. If you are a developer, you can copy and paste a few lines of code or implement the API on your own.

  • Integrations – Works with the majority of major email marketing platforms. If your platform isn’t on the list, you can always upload your list as a CSV, XLS, XLSX, or TXT file.

EmailListVerify’s pricing:

EmailListVerify offers a pay-as-you-go option, with verification of 1,000 emails starting at $4 ($0.004/email). The cost per email check decreases as the number of emails checked increases.

Monthly subscriptions are calculated based on the number of emails you need to verify per day. With these plans, you can save up to 50%. Prices begin at $139 per month for up to 5,000 emails per day.

#3. Million Verifier

Million Verifier
Million Verifier

Tamas Szabo, an email deliverability expert, founded and runs MillionVerifier. The app provides the most enticing email verification service. It stands out for its exceptional accuracy and extremely low prices.

MillionVerifier guarantees that at least 99 percent of your emails will be delivered successfully. A bounce rate of less than 1% will protect your email reputation, improve your inbox and open rates, and ultimately increase your profit.

MillionVerifier was created to provide the best email verification service for those with high email verification needs; as a result, MillionVerifier tries to offer the lowest rate on the market. As an example: For only $59, you can get 50,000 email verifications.

You can use MillionVerifier to verify your emails without risk as well. MillionVerifier is the only email verification service that offers a genuine money-back guarantee. If you use MillionVerifier to verify your emails and have a hard bounce rate of more than 4%, they will refund your money.

MillionVerifier’s features:

  • Highly accurate verification - 99%+ accuracy rate guaranteed by deliverability experts

  • Money-back guarantee - You can use MillionVerifier and get a refund any time

  • Integrations - Can be integrated with 14 email marketing tools

MillionVerifier’s pricing:

MillionVerifier promises to have the lowest verification rate on the market. You can make a payment on PayPal or credit card. The rates are like these:

  • $59 for 50,000 email verification.

  • $99 for 100,000 email verification.

  • $199 for 500,000 email verification.

  • $299 for 1,000,000 email verification.

  • See the full pricing plans on their website.

#4. ZeroBounce


ZeroBounce is a well-known email verification tool that is used by major corporations such as TripAdvisor, AllState, and Comodo. It has numerous verification processes as well as numerous integrations.

ZeroBounce aggressively searches for spam traps, emails that return hard bounces, and addresses that mark emails as spam. It also eliminates bogus and misspelled email addresses.

ZeroBounce’s features:

  • Bulk email list verification - Upload your whole list for verification.

  • Single email verification – Verify each email that appears to be invalid or not.

  • Real-time verification API – Integrate verification API with your site’s forms to avoid adding bad emails to your list in the first place.

  • Key customer information – ZeroBounce appends key customer information to valid email addresses on your list. This information may include your subscriber’s name, gender, geolocation, and other details.

  • Integrations – ZeroBounce seamlessly integrates with popular email providers and services. When you connect the tool to Zapier, you can integrate even more.

ZeroBounce’s pricing:

ZeroBounce provides credits as well as subscription programs. The credit system operates on a pay-as-you-go basis. They begin at $16 for 2,000 email confirmations. Premium options begin at $15 a month for 2,000 email verifications, a 6 percent reduction.

ZeroBounce’s freemium plan, which includes a monthly restriction of 100 email verifications, allows you to get started for free. When you pay for credits or purchase a subscription, your access to these free verifications ends.

You may also test ZeroBounce’s authentication procedure by entering a single email address in the verification area on the homepage.

#5. Email Checker

Email Checker
Email Checker

Another popular email verification tool is Email Checker. Clients of the service include Seagate, Box, and EE. To date, they have processed over 19 billion emails and averted over 1.3 billion bounces.

The verification phase of the program eliminates email addresses with invalid domains and grammatical issues. Temporary emails are also deleted, and mistakes and errors are fixed.

Correcting “gmail.cm” to “gmail.com” is an example. It’s all-in-one verification feature also detects and removes emails with high bounce rates from your list.

Email Checker’s features:

  • Bulk email list verification - Simply upload your whole list and wait for it to be analyzed by the tool. All emails, good emails, bad emails, unknown emails, and other emails can be downloaded.

  • Email Checker’s real-time verification API - integrate with your website’s forms to reject invalid or bad emails in real time.

  • Automated list API - Integrate your email marketing app with Email Checker’s List API to automatically feed lists to the tool and get clean lists on a daily basis. This function is designed for companies who get a lot of new members or customers on a daily basis.

  • eCommerce integration — The real-time verification API discussed above also works with ecommerce applications to prevent customers from entering incorrect email addresses during checkout.

Email Checker’s pricing:

Email Checker offers a credit-based system and monthly subscriptions as payment options. There are a dozen credit tiers and a dozen subscription packages to choose from. Credit tiers range from $14 for 1,000 email verifications to $2,499 for 2.5 million emails.

Plans range from $10 per month for 1,000 email verifications to $1,899 per month for 2.5 million emails. You must sign up for a minimum of two months in advance for any of the plans.

#6. Hunter


Hunter is an email outreach tool that includes an email verifier to help you clean up your inbox. Your outreach campaign’s deliverability rate will improve as a result of this.

Its main purpose is to help you find email addresses for business leads using domain searches, first/last name searches, and email address searches. Invalid emails, blacklisted emails,temporary emails, and emails with hard bounces are all detected by the email verification tool.

Hunter’s features:

  • Single email verification – For single email verifications, use the tool on Hunter’s Email Verifier page.

  • Verification of a large email list – Upload your entire list for verification.

  • API verifications – Integrate Hunter’s API with the email collection tools you use.

Hunter’s pricing:

Hunter’s pricing is determined by the number of requests he receives. One email verification, one domain search, and one email finder inquiry all count as one request.

Plans for 1,000 email requests start at €49 per month. There is also a free plan that allows you to make 50 requests per month.

#7. Clear out

Clear out
Clear out

Clear out can detect spam emails in a variety of ways. Duplicate emails, dots in emails, temporary emails, and sub accounts are all removed. Spam traps, emails from blacklisted domains, and emails with hard bounces are also identified and removed.

Clear out’s features:

  • Bulk email list verifications – Bulk email list verifications allow you to upload lists of up to 1 million emails at once.

  • Instant email verifications – Similar to single email verifications, these allow you to quickly verify a small number of emails.

  • Clearout’s lead finder - Accurately pinpoints key pieces of information from your subscribers’ email addresses, allowing you to create a separate list of potential B2B leads for outreach.

  • REST API - Allow developers to integrate its own API into forms for real-time verifications.

  • Integrations - Clearout integrates with only a small number of email marketing services. Fortunately, its Zapier integration can help fill in the blanks. You can also simply export and upload a copy of your list.

Clear out’s pricing:

Clearout offers two pricing options: pay-per-use and subscription. An annual subscription saves you 30%, from $24.50 per month for 5,000 credits to $24.50 per month for 5,000 credits. You can try out the service for free by verifying up to 500 emails.

#8. Mailer Check

Mailer Check
Mailer Check

MailerCheck is an excellent email validation platform from the same company that created MailerLite, one of the most widely used email marketing platforms.

MailerLite happens to have some of the industry’s best email delivery rates. They have 1.1 million customers as well.

Inactive mailboxes, typos, disposable email boxes, syntax errors, and other issues are all checked by their platform.

What are the main features of Mailer Check?

  • Bulk email verification – Upload a CSV or connect with your email provider to verify email addresses in bulk.

  • API integrations with well-known email services – Would you like to export your entire email list from a service like GetResponse or ConvertKit? You can easily import your subscribers using API integrations.

  • Individual email address verification – Do you need to double-check individual email addresses? You certainly can.

  • Reporting – Whenever you verify emails in bulk or through API integrations, you’ll get a detailed report.

Mailer Check’s pricing:

You can purchase one-time credits starting at $10 for 1,000 email credits. When you buy more credits, the price per email verification drops dramatically. A monthly subscription, on the other hand, will save you 20%.

#9. Xverify


Xverify is the undisputed market leader in bulk email list verification. They can validate both B2C and B2B emails and can validate all email addresses. They are distinguished by their accuracy, security, trust, and customer service.

Working with them is simple because you can call and speak with an email consultant directly. With two office locations in the United States, the company has built a strong reputation in the email verification industry for over 7 years. You can trust them to process your data safely and securely because they are based in the United States.

Xverify’s features:

  • Auto correction - Easily notify the typo in invalid email addresses and notify the end users when they name a domain incorrectly.

  • Fraud protection - Built-in fraud protection to detect temporary email accounts or involved with online fraudsters.

  • Cleaning accuracy - Xverify’s accuracy rate is 98% across major email domains like Gmail, Hotmail, Yahoo, etc.

Xverify’s pricing:

You can pay as you go by using Xverify. The more emails you need to verify, the lower the rate gets. For example, if you need to verify 5,000 emails, you will need to pay $40 ($0.0080 per email). But if you want to verify 50,000 emails, you will only need to pay $250 (0.0050 per email).

You can contact the sales team from Xverify to have a free list assessment and try the service before you buy.

#10. Debounce


DeBounce is an email validation and verification platform that is simple, fast, and accurate, with a 97.5 percent deliverability guarantee.

It has verified over one billion email addresses to date and has received a 5-star rating on TrustPilot from over 460 unique reviews. DeBounce has over 50 integrations and can connect, validate, and update email lists from a variety of sources, including Mailchimp, Mailerlite, Sendinblue, and others.

It is designed to remove invalid, disposable, spam-trapped, and role-based emails from your email lists (if desired). DeBounce can also validate some of the most well-known accept-all and difficult-to-verify email servers, including QQ, G-Suite, free.fr, GMX, Web.de, and others.

Debounce’s features:

  • Bulk validation - Verifying multiple email addresses at once, using .txt or .csv files.

  • Single email verification - Verify one email address at a time.

  • JavaScript widget - Install to integrate email verification to every HTML form.

Debounce’s pricing:

Debounce has a free plan with up to 100 free email verification, but you need to sign up for an account. You can try first and decide later by signing up, no credit card required. For 5,000 emails, the verification fee would be $10, when 50,000 emails would be $50 to verify.

With more than 800 good reviews on Trustpilot, Debounce is a well-made email verification tool at an affordable price.

#11. Never Bounce

Never Bounce
Never Bounce

Never Bounce was founded in 2014 and now has over 100,000 users. Uber, Dell, Girl Scouts, QuickenLoans, and Harvard Medical School are among the company’s clients.

Never Bounce specializes in bulk email list verification and single email verification. This is accomplished by validating mail servers and eliminating duplicate emails as well as syntax errors. It even verifies that domains are active and that certain emails have not been blacklisted.

Never Bounce’s features:

  • Verification of a large email list – Upload your entire list, wait for the tool to analyze it, and then download a clean, 99.9% deliverable list.

  • Verification via email – Verify millions of emails from various sources such as contact and lead forms, registration forms, CRMs, and more. Every month, you can verify up to 1,000 emails for free.

  • Instant bounce analysis - A free feature included with all accounts. It enables you to quickly assess whether your list requires cleaning prior to sending mass broadcast emails.

  • API wrappers - Available for easy integration with your tools if you’re a developer.

  • Integrations – Works with a variety of email marketing and help desk software. If you need to create your own integrations, Zapier is another option. Integration guides can be found in the NeverBounce help docs. Every month, all accounts receive 1,000 free API verifications.

Never Bounce’s pricing:

NeverBounce allows you to pay as you go or on a monthly basis. If you want to pay monthly, you’ll need to provide the number of emails you need to process and sign up for a free account.

Rates for pay-as-you-go email start at $0.003 per email for up to 1 million emails and rise to $0.008 per email for up to 10,000 emails.

If you have more than 1 million emails to process, you can contact NeverBounce’s sales team for custom enterprise pricing.

Final words

That is the end of my list of 11+ best email verification tools. If you are interested in any tool, make sure that it can integrate with the email marketing software that you are using and has a pricing plan you can afford.

AVADA Marketing Automation is a good option to start with email marketing if you haven’t had any app yet. We are easy to use with a ton of beautiful templates and automation tools for your email campaigns. Hit the link to view all features!

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