7 Best Email Verification Tools to Clean Your Email List


Are you looking for the best email verification tools?

Email verification tools scan your email list and use a series of different checks to clear out dangerous or invalid emails. The end result is a much higher deliverability rate and the protection of your email server’s reputation.

In this article, we’ll share with you the best email verification tools so you can clean your email list and avoid spam registrations.

What is Email Verification, and Why Is It Important?

Email verification is the process of confirming whether an email address is active. The goal is to ensure your email list is healthy, has a good sender reputation, and has low bounce rates.

When your emails bounce too often, it can hurt your email reputation and sender score because mail service providers won’t be able to deliver those to those invalid email addresses. You will still be paying for the attempt, though.

By validating emails, you won’t waste your time and money on junk leads.

It’s common for email addresses to become inactive over time. People might abandon email addresses they no longer use or they might leave their company and their corporate emails become inactive.

Every business must use an email verification tool to avoid potential negative consequences. And if you plan on growing your email list, then it’ll ensure your messages aren’t getting sent straight to spam. Here’s why you need it:

  • Reduce Bounce Rates: When you send emails to invalid or non-existent email addresses, they bounce back. This can harm your sender’s reputation and email deliverability. Email verification tools help you identify and remove such addresses, reducing bounce rates.
  • Improve Deliverability: A clean email list with verified addresses improves your chances of your emails reaching recipients’ inboxes instead of being marked as spam.
  • Save Costs: Sending emails to invalid addresses wastes money since most email service providers charge based on the number of contacts on your list.
  • Protect Your Reputation: Consistently sending emails to invalid addresses can negatively affect your sender’s reputation. A poor sender reputation can result in your emails being filtered as spam or not delivered at all.

And, if you’re sending emails through your WordPress site, you’ll also need to properly configure your WordPress email settings to ensure your customers are receiving your messages.

How Does Email Verification Tools Work?

An email verification tool is software designed to clean up your email list by removing inactive and invalid email addresses. They help to enhance email deliverability and the effectiveness of your email campaigns.

The verification process involves several steps:

  • Syntax Check: The software examines email addresses for correct formatting, including the user name, “@” symbol, domain name, and top-level domain such as .com or .net. Email addresses should follow specific character limits and permissible characters.
  • Blacklist Check: In this step, the tool compares your email list against a database of known issues, such as bots, spam traps, and fraudulent emails.
  • MX Records Check: The system checks the MX (Mail Exchange) records of the email domains to confirm their legitimacy. MX records specify the mail servers authorized to accept messages for a domain.
  • SMTP Protocol: The tool uses the SMTP (Simple Mail Transfer Protocol) to ping the email mailboxes. Based on the server’s response, it determines whether the address is ‘OK,’ ‘Doesn’t Exist,’ or ‘Disabled.’
  • You can verify individual contact information by entering a single email in the search box, or you can verify your entire database through bulk email verification.

    The best email verification tools seamlessly integrate with your CRM, email marketing software, marketing automation platforms, and landing page builders. This integration allows you to easily transfer and clean your data from the tools you already use.

    That being said, let’s take a look at the best email verification tools you’ll need for your small business.

    1. TruLead by OptinMonster

    TruLead by Optin Monster

    TruLead by OptinMonster is the most powerful and trusted email verification tool in the market. It only makes sense that TruLead is built by OptinMonster, the best lead-generation plugin for WordPress, used by over 1,200,000 websites.

    OptinMonster’s TruLead feature guarantees the authenticity of every lead you gather by using an AI-powered lead-filtering algorithm to effectively prevent newsletter signup spam.

    By implementing TruLead, you can enhance your return on investment (ROI) and maintain control over your email provider expenses. This is because you won’t incur charges for unqualified leads in your contact list. That way, you’ll cultivate a roster of qualified customers and leads who are genuinely interested in your business.

    TruLeads empowers you to filter leads based on various criteria, including specific IP addresses, temporary email addresses, free email addresses, particular characters or patterns in email addresses, and role-based emails like help@ or support@.



    • Highly accurate AI-powered lead filtering blocks spam submissions
    • Removes bad emails so you reduce your email provider monthly cost
    • Able to filter leads based on specific IP addresses and other factors


    Why we recommend TruLead by Optin Monster: TruLead by OptinMonster is the best email verficiation tool that saves you money by getting with of the bad leads. You’re probably wasting hundreds of dollars per month sending to invalid or spam emails.

    Whenyou improve your deliverability rate, that’ll lead to higher open and click-through rates, and ultimately more revenue generated from email marketing.

    Unlike most verification tools, you can get really targeted with how you want to filter out bad leads such as removing role-based emails, specific IP addresses, and more.

    Pricing: TruLead is included with your OptinMonster subscription.

    2. Pabbly


    Pabbly is an email verification software that allows you to confirm the accuracy and validity of email addresses automatically.

    This tool can be used to clean and maintain email lists, limiting the number of undeliverable or bounced emails. And it will boost your sender score and email deliverability.

    The main advantage is that Pabbly is much more affordable than most other services and has up to 98% deliverability success.

    Pabbly employs a hands-on approach using a human-involved process, ensuring better results than the competition. To date, Pabbly has successfully prevented over 720 million bounce incidents, and its developers are continually making improvements.

    Along with that, you can use its API key to easily connect the email verification service to your WordPress site.


    • 98% deliverability and high accuracy
    • Anti-greylisting features protects your email list from spammers
    • Uses TLD and keywords to help you find addresses with invalid syntax


    • Slow support
    • Doesn’t integrate with Zapier

    Why we recommend Pabbly: While speed is normally a good thing, Pabbly offers an insane 98% deliverability and 10% reduced bounce rate. That’s because they scrub emails at an incredibly slow place.

    Pricing: Pabbly pricing starts at $5 to verify 1,000 emails. With your purchase, you also will receive a detailed report that shows you the number of valid and invalid emails in your contact list. You get more bang for your buck the higher plan you choose. For example, $15 lets you verify 5,000 emails.

    3. Mailfloss


    Mailfloss is a handy email verification service with exceptional automation. Once you link it to your email service provider, it automatically cleans up your email list every day.

    This daily cleanup process removes email addresses that aren’t active shortly after they’re added to your list. You get to choose which categories of failed emails you want to remove automatically.

    So, once you’ve set it up, you don’t need to worry about cleaning your list again. You can instruct Mailfloss to add tags, fix typos, unsubscribe, or get rid of invalid email addresses.

    Mailfloss users also get reports with suggestions and insights about how their email addresses were acquired.

    The great thing is that Mailfloss works with more than 30 email service providers, including Drip, Klaviyo, MailerLite, and AWeber.


    • Daily cleanups to get rid of inactive addresses
    • Only requires a one-time setup, meaning it’s completely hands off
    • Fully automated workflow
    • Refund if you want to cancel in 30 days


    • All of the automations are locked behind the premium plan

    Why we recommend Mailfloss: We like Mailfloss because they offer exceptional automations. Once you connect it to your software, it’ll clean it up for youdaily. You can even tail Mailfloss to fix tag, typos, and remove invalid addresses. It even comes with a free 7-day trial and see whether it is the right tool for you.

    Pricing: You can give Mailfloss a try for free for seven days. If you decide to go with it, the monthly subscription pricing starts at $17 for the Launch Lite plan, which includes 10,000 scans. If you choose the annual payment option, it’s $14.17 per month. With pay-as-you-go pricing, 10,000 credits cost $20, and as you buy more credits, the price per email decreases, going as low as $0.00052 per email for 2.5 million verifications.

    4. Bouncer


    Bouncer serves as an email validation service, specializing in cleaning up your email lists. Its main goal is to improve the effectiveness of your email campaigns by ensuring they reach real people and avoid outdated, fake, and invalid addresses.

    The program checks the authenticity of email addresses, categorizing them as real, disposable, or likely invalid.

    On top of that, the tool follows strict rules for keeping your data safe (SOC2 and GDPR compliant). When you send an email to it for checking, your personal information is made anonymous right away. Plus, they promise that their service is always available and won’t go down.

    In addition to its core functionalities, Bouncer provides a valuable deliverability kit for verifying your mail server setup and authentication. It offers notifications when service providers blacklist your emails. Not to mention, the tool estimates the bounce rate for your upcoming campaign, so you can clean your list before you hit send.

    Bouncer seamlessly connects with other marketing tools, including Mailchimp, Moosend, Hubspot, Convertkit, GetResponse, and many others. Or you can simply upload a CSV file as well.


    • Pricing is great and offers pay as you go
    • Highly accurate email verification
    • Plenty of support in FAQ, videos and docs


    • Free email verficiation shows only basic information

    Why we recommend Bouncer: Bouncer is a email checker that validates email address deliverability without sending emails to inboxes. It is done in multiple steps to check for potential hard bouncers:

    • Syntax check: Looks for injvalid emails that have unnecessary spaces or spacial characters
    • Domain check: Ensures that the host domain is registered and working
    • Ping check: Connects with the recipient’s SMTP server to determine it’s status. The multi-prong process ensures a high accuracy rate.

    Pricing: Bouncer offers a generous free plan with 100 credits so that you can test their service. From there, they offer a pay-as-you-go model starting at $.008 per email for 1000-4000 emails. For example, it’ll cost you $8 to verify 1,000 emails. They do offer monthly plans as well, starting at $40 for the Apprentice plan, giving you access to 10,000 email verifications.

    5. Emailable


    Emailable is a bulk email verification service with an impressive 99% accuracy rate.

    You can easily upload your email lists to Emailable, either from your computer or by importing them from various email and marketing platforms. The tool’s design is straightforward and user-friendly.

    What sets Emailable apart is its Monitor module, which allows you to choose how frequently your email lists should be verified. You can customize settings for weekly checks on specific lists within your email and marketing platforms.

    Emailable offers valuable features like name and gender detection to enrich your lists. It also identifies role-based email addresses, particularly those used for company emails. This information is valuable for creating targeted b2b email campaigns.

    You can keep an eye on important deliverability metrics using inbox reports. Emailable smoothly connects with a wide range of tools, including MailerLite, Pipedrive, MailUp, Brevo, ActiveCampaign, Constant Contact, and over 80 other platforms.


    • Very easy to use, especially to upload, view, and download verified emails
    • Fast verfication speeds
    • Lots of integrations
    • Reports on key metrics that impact your email deliverability


    • Occasional missed hard bounces

    Why we recommend Emailable: Emailable is one of the fastest email verification tools out there, with an impressive verification speed of 0.012 seconds per email. On top of that, it offers 90+ integrations covering a broad range of email marketing services, eCommerce platforms, customer relationship management apps and marketing platforms.

    Pricing: Signing up with Emailable grants you 250 free credits. Pay-as-you-go pricing starts at $30 for 5000 credits, with the lowest cost reaching $0.00135 per email for 2.5 million credits. If you opt for a monthly plan, 5000 credits come at $25.5 per month, saving you 15% compared to pay-as-you-go pricing.

    6. Mailercheck


    Mailercheck is an email verifier created by the marketing platform MailerLite. This software guarantees a whopping 98% accurate rate using its multi-layer validation process.

    Along with the single and bulk email checkers, MailerCheck provides real-time verification. As you grow your list, it’ll automatically verify the addresses using their email verification API.

    The system allows you to test deliverability with email marketing services, such as Gmail, before sending to see if your email lands in the inbox spam folder or gets blocked. This is a must for small businesses, as you don’t want your emails getting sent to your subscriber’s spam folder.

    You can use the Inbox Insights feature to fix authentication issues and check campaign analytics. This useful feature lets you test email content, too. For example, it will detect broken links, spammy words, tags in HTML emails, and missing file attributes. That way, you don’t send emails that would be flagged as spam.

    It works with popular email services like MailerLite, ActiveCampaign, ConvertKit, GetResponse, Mailchimp, Make, and Zapier.


    • Validates email domain
    • Reviews your email to detect unusual format and spam words
    • Checks for broken links and mising files


    • Expensive pricing plan
    • Can take a long time for verification

    Why we recommend Mailercheck: We like Mailercheck because it helps to verify your entire email list in 3 simple steps. It cleans your email list by detecting inactive emails, spam traps, fake emails, and bounces. Also, you receive email insights to helpyou maximize delivery and open rate.

    Pricing: You can test MailerCheck with 200 free credits. If you need more, you can choose pay-as-you-go pricing, starting at $10 for 1000 credits. The more credits you buy, the lower the cost per credit. They also offer a basic monthly plan, starting at $125 per month, which includes one user, inbox insights, placement, 10 domains, and 64 blocklist monitors.

    7. NeverBounce


    Neverbounce is a trusted tool for checking lots of emails at once, and it can verify them in real-time or automatically.

    If you have a list with many unknown email addresses, their team will personally review it. If more than 3% of your emails bounce after using NeverBounce, they’ll refund the extra cost.

    You can easily share data within your teams using NeverBounce. Team members can access each other’s saved lists and account apps.

    NeverBounce works with over 80 different sales and marketing software like Moosend, Pipedrive, Salesforce, Constant Contact, and Zoho CRM.


    • Thoroughly cleans and verifies all valid, invalid, and unknown addresses.
    • Syncing to email provider for daily automatic list cleaning
    • Responsive support team


    • UI can be confusing to use

    Why we recommend NeverBounce: NeverBounce is one of the most trusted email verification tools. It cleans and verifies your list in two steps. First, it analyzes the list and finds misspelled and duplicated addresses. From there, it verifies the validity of them. While it’s on the pricier side, it works with just about most email platforms, so you can get daily verifications and never worry about sending invalid emails.

    Pricing: If you choose to pay as you go, you’ll pay $0.008 for 10,000 credits. For 1 million credits, it costs $0.003 per email. The smallest monthly plan includes 1,000 credits and is priced at $10. You can save 20% on every plan if you subscribe annually. If you need over 1 million credits, you can reach out to their team for a customized offer.

    How to Choose the Best Email Verification Service

    The best validation service is one that has the highest accuracy rate at detecting undeliverable, invalid, and spam email addresses. At the bare minimum, the service should check for catch-all servers, SMTP authentication, and domain authentication.

    While email verification validates the accuracy of email addresses in your contact list, you’ll also need a service to help ensure you can reliably deliver emails.

    That’s why we recommend WP Mail SMTP, the best WordPress SMTP plugin for improving the deliverability of emails sent from your WordPress site. The plugin allows you to use an SMTP server to send emails rather than relying on the default mail function provided by your web hosting server.

    WP Mail SMTP

    What’s the Best Email Verification Service?

    TruLead by OptinMonster is the absolute best email verification service out there. It offers advanced features like AI-powered lead filtering to ensure the authenticity of collected leads.

    That way, you don’t have to use separate tools or manually check your lists since OptinMonster can collect and verify them for you. It’s best for all businesses, including small websites, online stores, content creators, and just about anyone with an email list.

    Pabbly is another solution that is known for its affordability and high deliverability success. Mailflosss offers a daily automation email list verification, so you can avoid ever having to deal with inactive addresses.

    We hope this article has helped you pick the best email verification tool for your business so you can keep your email lists fresh and healthy. You may want to also check out our guide on how to build an email list in WordPress or how to increase your blog traffic.

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