What is The Best Email Validator Online? Our Top 7 Picks

May 10, 2024

Ever spend hours crafting the perfect email campaign, only to have it vanish into the internet abyss? Yep, bounced emails are a real drag. 

email validator online<br />
- cover photo

But fear not, email warriors! This guide reveals the top 7 email validator online services, which will save your email campaigns from the spam folder.

We’ve done the dirty work (reading reviews, comparing features, wrestling with pricing) so you can get back to crafting killer campaigns. Let’s take a look!

What’s an email validator?

An email validator is a tool that verifies whether the email addresses on your list are real and can receive emails. It also ensures that the addresses on your list are not temporary, spam traps, catch-all addresses or duplicates of addresses you already have. If you send out campaigns to any of these, you risk getting high bounce rates.

Bounced emails (emails that get rejected) can hurt your sender’s reputation and potentially land you in spam folders. Using an email validator ensures your emails reach the intended recipients, keeping your campaigns effective.

An email validation tool is a must-have for any email marketer that wants to ensure better results from their campaigns.

Top 7 Email Validators

These are the 7 best email validators we could find online.

#1 Bouncer: Best Overall

email address exists bouncer

G2: 4.8/5

Bouncer is a straightforward email validation tool that improves your email campaign success. It quickly checks and confirms email addresses, ensuring low bounce rates and high deliverability. 

Whether you send a few emails or manage large-scale campaigns, Bouncer adapts to your needs. Its clear interface makes email verification simple and efficient. If you need help, our responsive customer support is ready to assist you. Bouncer has 98% accuracy.

Key features:

  • Bulk and single email verification
  • Detects disposable emails
  • Validates domains and mail servers
  • Checks syntax and catch-all servers
  • Conducts toxicity checks for better deliverability
  • Provides an API for easy integration


  • Easy to use.
  • Plans for every budget.
  • GDPR compliant.
  • Excellent customer support.


  • Higher plans may be expensive for smaller teams.
  • Needs more third-party integrations.


  • Free Plan: 10,000 verifications, syntax only
  • Pay-as-you-go: $8 for 1,000 credits
  • Apprentice Plan: $20/month for 10,000 emails
  • Adept Plan: $100/month for 50,000 emails, includes disposable email checks
  • Master Plan: $500/month for 500,000 emails, includes comprehensive checks
  • Enterprise: $21,000 to $81,000/year for full features and support

Choose Bouncer for reliable email verification that scales with your needs. From occasional clean-ups to regular, large-volume verifications, Bouncer’s flexible plans provide the tools you need to maintain a healthy email list. Credits never expire, there are quick refill options, and you get truly exceptional support.

Sign up now and validate your first 100 emails for free!

#2 Emaillistverify: Best Value

verify email addresses

G2: 4.4/5

EmailListVerify email checker stands out for its efficient and straightforward service in email list verification. It offers both pay-as-you-go and monthly subscription options, which is pretty flexible. 

Users appreciate its simple, intuitive interface and the reliable results it delivers, allowing for quick and effective email list cleaning. The tool supports bulk verification, real-time checking, and several validation checks including syntax, domain, SMTP, and spam traps. 

They also claim a 100% accuracy but that is not verified. However, some users noted issues with unclear error explanations and occasional inaccuracies in list cleaning.

Key features:

  • Bulk email verification
  • Real-time email verification API
  • Syntax validation
  • Domain and SMTP validation
  • Spam trap detection
  • Disposable email address removal
  • Catch-all domain detection
  • Hard bounce checker
  • Duplicate email removal
  • Email health checker


  • Simple, user-friendly interface.
  • Flexible pricing suitable for various budgets.
  • Reliable performance with quick results.


  • Sometimes, it lacks clear explanations for errors.
  • Occasional inaccuracies in cleaning lists.


  • Pay-as-you-go starts at $24 for 10,000 emails, $169 for 100K emails.
  • Monthly plans start at $139, allowing up to 5,000 emails per day​​.

Overall, EmailListVerify makes the most sense for companies with large email lists.

#3 Zerobounce: Best for Enterprise

free email verifier zerobounce

G2: 4.6/5

ZeroBounce is ideal for enterprises needing reliable email validation. It supports massive email volumes with 99% accuracy and powerful security features compliant with SOC 2, ISO 27001, HIPAA, and PCI standards. 

Dedicated support includes a personal account manager and customized training, both of which are highly important in enterprise settings. ZeroBounce’s infrastructure ensures 99.99% uptime, which is key for large operations.

Key Features:

  • Bulk email verification
  • Real-time API
  • List cleaning
  • Detects disposable emails
  • Checks syntax and servers
  • Spam trap detection
  • Detailed analytics
  • CRM integrations


  • Highly accurate.
  • Scales for large volumes.
  • Advanced security certifications.
  • Personalized customer support.


  • Pricing details can be unclear.
  • It may be too complex for smaller businesses.


  • Pay-as-you-go: $0.008 per email for up to 10,000 emails; $0.005 per email for up to 100,000 emails.
  • Subscriptions: From $15/month for 2,000 credits to $249/month for 100,000 credits.

ZeroBounce offers powerful tools and dedicated support for enterprises, ensuring effective and secure email communication at a large scale.

#4 Verifalia: Best Accuracy

free email checker tool verifalia

G2: 4.0/5

Verifalia provides a powerful email validation service that improves the accuracy and reliability of your email list. It verifies emails in real time to prevent bad entries from ever joining your list. 

Verifalia can handle large volumes of emails quickly and accurately, whether in real-time or through bulk processing. It secures your data rigorously, and it’s compliant with privacy laws to ensure your information stays protected. It is known for its 99% accuracy of the results. 

The platform integrates seamlessly with over 6,000 apps, making it easy to fit into any system you’re already using. For businesses big and small, Verifalia is a versatile and essential tool for effective email communication and marketing strategies.

Key Features:

  • Bulk email verification
  • Disposable email detection
  • Domain check
  • Mail server validation
  • Single email verification
  • Spam trap detection
  • Syntax check
  • Catch-all server detection


  • Offers daily free email checker credits.
  • Features real-time email verification services.
  • High verification accuracy up to 99%.
  • Robust integration capabilities with over 6,000 apps.
  • User-friendly with an embeddable widget for websites​.


  • Relatively expensive compared to some competitors.
  • Customer support has been rated poorly.
  • Complex credit system that may be difficult to understand.


Verifalia offers a flexible freemium pricing model with several tiers to accommodate different user needs:

  • Free: 25 daily credits
  • Starter: 250 daily credits – $9/month
  • Professional: 1,250 daily credits – $49/month
  • Enterprise: 6,250 daily credits – $199/month
  • Ultimate: 25,000 daily credits – $499/month

Additional options include pay-as-you-go for purchasing extra credits and volume discounts for larger credit packs. All plans come with free open-source SDKs and extensive integrations, with more advanced features, such as classification overrides and firewall protection, available at higher tiers.

#5 Emailhippo: Best for Fraud Prevention

free email verifier tool email hippo

G2: 4.0/5

With 95% accuracy, Emailhippo offers a powerful tool called “ASSESS” aimed at preventing fraud during sign-up processes. This API combines Emailhippo’s email verification technology with additional data points to identify and block high-risk emails that might be linked to fraudulent activities. 

The focus on fraud prevention and detecting harmful emails complements Emailhippo’s core email verification services. Clients often commend Emailhippo for its effectiveness in blocking fraudulent users, thus helping to maintain a credible sender reputation. 

Using advanced algorithms and data intelligence, Emailhippo effectively identifies patterns that might indicate fraudulent behavior in email addresses.

Key Features:

  • Bulk email verification
  • Real-time email verification API
  • Syntax validation
  • Domain and email server validation
  • Disposable email detection
  • Catch-all domain detection
  • Invalid addresses detection
  • Spam trap and greylist checks
  • Detailed verification results dashboard
  • Fraud prevention (ASSESS product)
  • Data enrichment (add-on)


  • High precision in validation.
  • Sophisticated algorithms check emails thoroughly.
  • Handles large volumes of emails efficiently.
  • Offers comprehensive statistics for list health.
  • Allows uploading of large .csv files without needing to split them.


  • The user interface could be more modern and intuitive.
  • Navigation through the platform can be cumbersome.
  • Some validation results for specific domains (e.g., AOL, Hotmail) may not always be accurate compared to other email validation services.


  • Free Version: Provides basic features to get started.
  • Paid Plans: Begin at $9.88/month and $17/month.
  • Usage-Based Pricing: Available for varying needs, adding flexibility.

While Emailhippo offers effective tools and a range of pricing options, full details on their pricing tiers are not fully disclosed, which may affect transparency for potential users. The flexibility in pricing suits different user needs, from small businesses to large enterprises.

#6 Snovio: Best for CRM Features

snovio validate email addresses

G2: 4.6/5

While Snovio does have capable email validation functionalities, it really shines when you pair it with its sales-oriented features. It finds emails, warms up inboxes, has a complete sales CRM with pipelines and deal management, and, in general, offers more than the other tools on the list. 

The starter plan only has 1,000 email verification credits at $30, which certainly makes it the most expensive verifier here. It’s very accurate, with almost 99% non-bounced emails. If you want to use it only for verification, you might want to look elsewhere. 

However, you shouldn’t discredit Snovio for its price because it’s justified. We included it on this list because it’s a great tool—not necessarily only for email validation, but all-around for email outreach.

Key Features:

  • Email verification (7-tier process)
  • Email Finder
  • Email drip campaigns
  • Bulk domain search
  • Integrations with over 5,000 tools via Zapier
  • Sales CRM
  • Chrome extensions for prospecting
  • Email warmup to improve deliverability


  • CRM features
  • Email finder
  • Drip campaigns
  • Offers a free plan


  • Price
  • Few verification credits per plan


  • Free Trial: 50 credits
  • Starter: $30/month – 1,000 credits
  • Pro 20K: $199/month – 20,000 credits
  • Pro 50K: $499/month – 50,000 credits
  • Pro 100K: $999/month – 100,000 credits

The credits can be used for features like domain search, email verification, and finding prospects on LinkedIn. The pricing is based on the number of credits, email recipients for campaigns, and mailbox warmups needed. Snovio also offers a 25% discount if billed annually and provides additional capabilities like enrichment API, email pattern intelligence, and more on higher tiers.

#7 Neverbounce: Best for List Cleaning

spam folder neverbounce

GetApp: 4.5/5

NeverBounce is renowned for its effective email list cleaning service, backed by a rigorous 20+ step verification process. This process checks each email address up to 75 times from various global locations, ensuring thorough scrutiny. NeverBounce could use a higher success rate, though, with 93%. Still solid, though.

Offering bulk list uploads and real-time verification through an API, NeverBounce integrates seamlessly with over 85 different apps. This integration, combined with automated syncing, enables ongoing list hygiene, a necessity for large-scale operations. The service is frequently recommended in communities like HubSpot’s for its reliability in maintaining clean email lists and preventing bounces.

Key Features:

  • Bulk and real-time email verification
  • Integration with popular email marketing tools
  • Advanced analytics and detailed reporting
  • Disposable email and catch-all domain detection


  • Highly accurate list cleaning reduces email bounces.
  • Seamless integration with a wide range of apps.
  • User-friendly interface simplifies list management.


  • Some users report issues with customer support responsiveness.
  • Pricing may be high compared to competitors, especially for smaller businesses.


NeverBounce employs a pay-as-you-go model, allowing flexibility based on the number of emails verified. For large lists, the cost per email decreases, making it economical for large-scale validations. They also offer monthly subscriptions, ranging from $10 for 1,000 emails to $999 for 1,000,000 emails, catering to different user needs.

Overall, NeverBounce is a trusted solution for businesses seeking to maintain the health of their email lists and improve overall email campaign performance.


Each tool brings something unique to the table. Bouncer keeps things affordable and user-friendly. NeverBounce offers deep cleaning for the messiest of lists. 

ZeroBounce secures the enterprise front with top-tier accuracy. Choose wisely based on your needs. 

Whether it’s safeguarding your sender’s reputation or cleaning up a massive list, the right tool will turn your email woes into wins. Don’t let bounces be your downfall. Equip yourself with one of these validators and watch your email effectiveness soar.

Sign up for Bouncer now and validate your first 100 emails for free!


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