2024-04-21 3:27 pm
2024-04-22 5:33 am
2024-04-22 5:33 am

17 Best Email Verification Tools to Validate Email Addresses

Are you looking to improve your email marketing skills and maximize results? Boost your email marketing game and learn everything you need to know about the best email verification tools. This article will introduce you to some of the most powerful email checkers on the market, explaining how to pick the best one for your specific needs.

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Our List of Best Email Verification Tools

1. Bookyourdata

Bookyourdata real-time email verification

Bookyourdata’s online list builder can be customized according to categories like management levels, job titles, industries, job functions, countries, and states. The platform integrates an 8-step email verification process into every email, meaning all the addresses are automatically validated and ready to use. This revolutionary feature eliminates the need for email checkers because all the emails on the list bought from them are deliverable and valid. They offer instant data delivery right after purchase.

Best features: 

Some of Bookyourdata’s best features are:

  • Instantly-available custom email lists
  • Real-time email verification
  • Access to over 100 data attributes
  • Targeted lead discovery with 100+ filters
  • Mobile direct dials
  • Never-expiring credits
  • Sales toolkit including Prospector, Email Verification, Bulk Lookup


The company offers an industry-first pay-as-you-go pricing model that gives users complete control over expenses and eliminates the need for contracts, commitments, and monthly subscriptions.

Tiered pricing and volume discounts allow users to save money for large orders. The more they order, the less they’ll pay. This system grants lower rates for growing companies.

Bookyourdata is proud of its 100 percent transparent prices without hidden costs or fees. Here are their rates for purchasing completely valid and highly customized email lists:

  • 10 Credits: Free
  • 250 Credits: $159 ($0.40/credit)
  • 500 Credits: $219 ($0.32/credit)
  • 750 Credits: $229 ($0.31/credit)
  • 1,000 Credits: $299 ($0.30/credit)
  • 1,500 Credits: $399 ($0.27/credit)
  • 2,500 Credits: $599 ($0.24/credit)
  • 3,500 Credits: $699 ($0.20/credit)
  • 5,000 Credits: $799 ($0.16/credit)
  • 7,500 Credits: $899 ($0.12/credit)
  • 10,000 Credits: $999 ($0.10/credit)

What we like: 

  • They are the first in the industry to offer 97% accuracy on B2B prospecting.
  • You can export thousands of verified leads without dealing with third-party verifiers in seconds.
  • Features like API, direct CRM integrations, data enrichment, and bulk lookup are available without additional payment.
  • They provide access to all-inclusive data, such as work emails, personal addresses, and mobile dials in seconds.
  • Bookyurdata’s immense database includes 500M+ profiles, 250M+ B2B contacts, 30M+ worldwide companies, and 60k+ technologies.
  • Their email lists comply with data laws and regulations, like GDPR and CCPA.
  • Everyone can test their services without payment or credit card information by getting 10 leads free of charge.

What we don’t like: 

  • We’d love to see more integration options.
  • The company should invest more in advertising since some businesses don't know about their game-changing services.

In summary, Bookyourdata completely transformed the world of B2B data, offering 97% accuracy, verified contact without needing third-party checkers, user-oriented pricing models, free integrations, a huge database, data laws complement, and ten free leads without a credit card. 

With a platform like this, you simply don’t need other email list cleaning services because every address you purchase is valid and deliverable. Build your list with Bookyourdata now to maximize your email marketing results!


2. Hunter.io

hunter.io email verification tool

Hunter.io is a powerful email verifier and outreach platform with over four million user accounts. Its main features are email finding and B2B prospecting. Still, it offers other options like email verifier, domain search, bulk verifier for large email lists and email databases, and smooth integration with other platforms.

Best features:

  • Domain Search
  • Email Finder
  • Email Verifier
  • Campaigns
  • Integrations
  • Browser extension
  • Google Sheets add-on


Hunter offers free searches with limited checks and verifications. Besides this basic plan, there are three packages available for monthly and yearly payments; 

  • Starter: $49 per month/$408 per year
  • Growth: $99 per month/$828 per year
  • Business: $399 per month/$3,348 per year

What we like: 

  • Hunter can find email addresses associated with a specific domain.
  • It is quite accurate and dependable.
  • The tool offers seamless integrations for custom projects.

What we don't like: 

  • It offers limited integration options compared to some less popular services. Platforms like ZeroBounce and NeverBounce offer a wider range of integrations with email marketing apps and platforms.

Hunter is a great place to get leads and verify them with high accuracy. However, if you don't need custom integration or want to connect your email verifier with all your apps, maybe you should check out other tools.

3. Clearout

Clearout email verification tool

Clearout is an email verifier with the primary function of offering users valid and deliverable emails. It also has other options like list building, bulk validation, API for developers, and integrations with popular platforms like MailChimp.

Best features:

  • Prospect SQL/MQL list building
  • Email Finder for individual or bulk emails
  • Email Verifier for individual, bulk, or API verification
  • Clearout for Sheets for verifying emails directly in Google Sheets
  • ClearoutPhone for validating phone numbers


This platform offers a pay-as-you-go model and monthly and yearly subscriptions. These are their current prices (check their official website for fresh information): 

  • 3,000 credits -$21
  • 10,000 credits - $58
  • 100,000 credits - $350
  • 250,000 credits - $625
  • 500,000 credits - $850
  • 1 million credits - $1,100

Monthly subscriptions start from $35.2 and go up to $4,050 for 5 million credits. The annual plan goes from 23.3 to $3,600 per month.

What we like: 

  • It's accurate and easily integrates with other platforms. 
  • They offer 100 free credits, which is quite nice.
  • We love easy integration with other software pieces.
  • It's user-friendly, and verifying emails is quite easy.

What we don't like: 

  • It's slightly slower than some other platforms.
  • It's not among the cheapest if you need many contacts.

Clearout is a great tool for small and medium-sized companies that don't require bulk cleaning. It is accurate, easy to use, connects to major email marketing tools, and offers diverse features. However, large businesses should choose something more affordable.

4. Bouncer

Bouncer email verification tool

Bouncer is an email verifier offering bulk verification, email validation API, and integrations with popular platforms. It is known for its user-friendly interface, high accuracy rate, real-time validation, and toxicity check.

Best Features:

  • Syntax validation
  • Domain validation
  • MX record detection
  • Disposable checker
  • Catch-all domain detection
  • Email bounce checker


The tool brings various pricing models, with both pay-as-you-go and subscription plans. They provide sharing between multiple users, and the credits you buy never expire. Bouncer is pricey compared to other tools like Clearout and affordable compared to ZeroBounce. 

These are available monthly plans:

  • 10k Credits: $50/month
  • 50k Credits: $200/month 
  • 100k Credits: $300/month
  • 250k Credits: $625/month
  • 500k Credits: $1000/month
  • 1M Credits: $1500/month

What we like: 

  • We appreciate flexible pricing starting from only $8.
  • High accuracy in email validation is a plus.
  • Another positive thing is easy API integration with custom apps.
  • The tool is user-friendly and very easy to navigate.

What we don’t like: 

  • We’d like to see more direct integrations with CRMs and popular platforms.

Bouncer is a great email verifier with a user-friendly interface, moderate and flexible pricing, high accuracy, and smooth API integrations.

5. ZeroBounce

Zerobounce email verification tool

ZeroBounce is a really powerful email checker with more than 300,000 clients and a variety of services.

Best features:

  • Email Validation
  • DMARC Monitor
  • Email Activity Data
  • Email Scoring
  • Email Finder
  • Blacklist Monitor
  • Email Testing Tools


Pay-as-you-go solutions are available for smaller or less frequent demands, while volume savings come with larger orders. ZeroBounce has a tiered pricing system determined by the number of verifications and monthly subscriptions in five packages:

  • Freemium Package - free
  • Starter Package - $49 per month
  • Team Package - $99 per month
  • Pro Package - $249 per month
  • Enterprise Package - $999 per month

These plans come with various services. Check them all out on their website.

What we like: 

  • Their selection of verification services.
  • The platform’s basic services are simple and easy to use.
  • ZeroBounce is well known for its high accuracy.
  • Integration of AI in some of their services.
  • Zapier and third-party integrations with countless platforms.

What we don’t like: 

  • Some of their services require high proficiency and knowledge (AI email scoring).
  • The free trial offers only 10 email finder/domain searches.

ZeroBounce is a serious and comprehensive email marketing tool suitable for large corporations and businesses that look for many features and a high accuracy rate. It’s not perfect, and some of the worst points are poor free plan and the complexity of advanced features.

6. ZoomInfo

Zoominfo email verification tool

ZoomInfo is a complex platform for B2B contact databases that gives organizations access to precise information about prospects and businesses. Its main purpose is to improve marketing and sales operations, and data cleaning is only one of this platform's services. 

Best features:

  • Access to a large database of businesses and individuals.
  • Detailed information about prospects, including email and phone number.
  • Direct integration with CRMs.
  • Targeted outreach based on intent, engagement, and other factors.
  • Market analysis and segmentation.
  • Contact validation services.


ZoomInfo offers subscription plans, but prices are not displayed on their website.

What we like: 

  • ZoomInfo offers detailed insights into an immense database.
  • Intent data service brings relevant and timely outreach.
  • Smooth integration with CRM systems is a big plus.
  • The tool offers advanced search and targeting options.

What we don't like: 

  • Untransparent pricing is a big minus.
  • Some users report low validation accuracy.

ZoomInfo is a great choice for large organizations needing detailed information about their prospects and large email lists or databases. The platform is simply too complicated for small businesses and individuals looking for an email verifier.

7. Snov.io

Snov.io email verification tool

Snov.io is a tool that offers many services for sales teams, recruiters, and outbound marketers. 

Best features:

  • Checking email validity is one of its main functions.
  • Lead generation and email finding are other popular features.
  • This company provides LinkedIn outreach services.
  • Snov.io allows companies to manage email marketing campaigns.
  • It integrates easily with CRMs.


  • Snov.io offers monthly and annual subscriptions.
  • Trial: free
  • Starter: annual $30 per month, monthly $39 per month
  • Pro: annual $75 per month, monthly $99 per month
  • Managed Service: starting at $3,999

What we like: 

  • We love its features that cover marketing and sales.
  • The combination of lead generation, validity checker, and email outreach in one platform.
  • The tool is easy to use, and the layout is simple and intuitive.

What we don't like: 

  • Snov.io only offers a few integration options. 
  • Whatever you want to do, you'll spend credits.

Snov.io is an interesting tool that combines lead generation, list cleaning, and email marketing strategies. It offers solutions for marketing and sales. Disadvantages are limited integrations and credit-base plans. However, despite these minor issues, Snov.io offers crucial services for customers looking to increase the effectiveness of their email campaigns and prospecting.

8. Emailable

Emailable email verification tool

The platform offers dependable and fast email verification services. Emailable is user-friendly and straightforward, allowing marketers of different skill levels to use it stress-free.

Best features: 

  • The tool verifies emails in real time.
  • Identifies addresses that accept all emails sent to their domain, regardless of the account.
  • It provides detailed statistics in its report.
  • It integrates with some popular apps and CRMs.
  • Emailable can do bulk email cleaning.


Emailable offers pretty affordable prices compared to their competitors. They provide a pay-as-you-go method, and their current prices are the following:

  • 5,000 - $32.30
  • 10,000 - $51
  • 25,000 - $119.85
  • 50,000 - $208.25
  • 100,000 - $357
  • 250,000 - $637.50
  • 500,000 - $1,147.50
  • 1,000,000 - $1785
  • 2,500,000 - $3,081.25

Please check their website for current costs.

What we like: 

  • Emailable is a very intuitive and user-friendly platform.
  • It provides a high accuracy rate for verified emails.
  • You can integrate it with some popular email marketing tools.
  • The price is lower than with most other respectable tools.

What we don’t like: 

  • Emailable focuses on email validation and lacks other services.
  • While the price is generally affordable, the cost can be higher for bulk validation.

Get Emailable if you’re a startup or medium-sized organization that needs email cleaning services. If you need to clean large lists or databases, or if you want more features related to email marketing, you should probably choose another tool.

9. DeBounce

Debounce email verification tool

DeBounce is an email cleaner that supports bulk verifications. This tool is great for beginners and companies that don’t require integrations with many other apps.

Best features: 

  • DeBounce offers a real-time email verification service.
  • It uses a syntax checker to eliminate emails with errors and typos.
  • This tool will help you find spam traps.
  • It offers easy integration with your favorite apps.
  • Catch-all email detection will help you find contacts that choose to receive all messages sent to their domain.


DeBounce allows you to pay only for credits that you use. The following is their current offer from their website:

  • 5,000 Verifications - $10
  • 10,000 Verification - $15
  • 25,000 Verifications - $30
  • 50,000 Verifications - $50
  • 100k Verifications - $90
  • 200k Verifications - $140
  • 500k Verifications - $300

What we like: 

  • DeBounce offers complex email verification services at a reasonable price.
  • The platform is accurate and user-friendly.
  • They provide some additional services like email-finding tools.
  • Despite the pay-as-you-go model, the price for bulk validation is fair.
  • They remove duplicates for free.

What we don’t like: 

  • While they offer integration with some widely-used apps, they don’t cover all popular ones.

DeBounce is an attractive option for companies that are searching for a fairly priced, comprehensive email cleaning tool. However, those who appreciate integrations with many other platforms and want other email marketing services related to email campaign management and sales should opt for another tool.

10. NeverBounce

Neverbounce email verification tool

NeverBounce is a popular tool that goes beyond email validations. One of its most notable features is its integration with many tools and platforms.

Best features: 

  • NeverBounce offers real-time validation of different email types.
  • It provides an API for developers, allowing real-time verification on custom websites and apps.
  • The platform easily integrates with many other tools and CRMs.
  • NeverBounce provides solutions for automated list cleaning.
  • Corporations rely on it for bulk validations.


The more you order, the less you'll pay. These are the prices that we found on their website:

  • up to 10,000 emails for $0.008
  • up to 100,000 emails for $0.005
  • up to 250,000 emails for $0.004
  • up to 1,000,000 emails for $0.003

Businesses interested in the plan that exceeds 1,000,000 emails should contact NeverBounce directly.

What we like: 

  • We love integrations with a lot of other platforms.
  • NeverBounce is quite easy to use.
  • Prices are flexible and adjusted to small and big firms.
  • They offer accurate results that can reduce bounce rates and improve deliverability.

What we don't like: 

  • The service can be a bit expensive if you need frequent list cleaning or many credits.
  • NeverBounce focuses on list cleaning and doesn't have solutions for other email marketing needs.

NeverBounce is easy to use; you can integrate it with your other email marketing tools, and it offers automated verifications, custom API, and bulk validation. It can be expensive if you are a frequent user, and it doesn't provide other services for email marketers.

11. MailerCheck

Mailercheck email verification tool

MailerCheck is a simple and accurate email checker designed to improve email deliverability and engagement.

Best features:

  • MailerCheck focuses on user-friendliness and accurate email validation.
  • It delivers reliable bulk cleaning.
  • You can integrate it with some apps and tools in email marketing.
  • It offers an API that can be integrated into your website or application sign-up forms.
  • The tool delivers detailed reports.


Offers a tiered pricing structure based on usage. The following information is what we got from MailerCheck's website:

  • 1,000 credits - $10
  • 2,500 credits - $25
  • 5,000 credits - $45
  • 10,000 credits - $80
  • 20,000 credits - $160
  • 75,000 credits - $450
  • 100,000 credits - $500
  • 500,000 credits - $1,500
  • 1M credits - $2,000
  • 5M credits - $5,000

What we like:

  • We're fans of their real-time verification service.
  • This tool is easy to use.
  • MailerCheck provides detailed reports.

What we don't like:

  • There are cheaper tools that offer similar services.
  • It offers limited integration options.

MailerCheck offers accurate and complex email cleaning with detailed reports that can help develop strategies for email marketing. It is more suitable for small businesses than large corporations because of its prices.

12. TrueMail

Truemail email verification tool

TrueMail is a straightforward and reliable email verifier excellent for small and medium consumers. You can integrate it with other email marketing tools.

Best features:

  • Its main feature is a thorough email list cleaning.
  • The platform provides detailed validation results.
  • It offers a real-time validation API.
  • The tool can handle bulk list cleaning.
  • MailerCheck detects typos and errors.
  • It allows list segmentation.


  • $0 Monthly / $0 Yearly for 100 Email Verifications
  • $34 Monthly / $500 Yearly for 5000 Email Verifications 
  • $69 Monthly / $828 Yearly for 5000 Email Verifications
  • $139 Monthly / $1668 Yearly for 5000 Email Verifications
  • $279 Monthly / $3348 Yearly for 5000 Email Verifications

What we like:

  • We appreciate TrueMail’s accuracy.
  • The platform is easy to use.
  • They offer comprehensive reports.
  • Developers can get API for custom integrations.

What we don’t like:

  • Like with similar tools, high-volume needs come with high prices.
  • It integrates with a few popular apps.

Choose TrueMail for precision, detailed reporting, and custom integrations. Avoid it if you are searching for an affordable bulk email verifier and integration with all your frequently used apps.

13. Kickbox

Kickbox email verification tool

Kickbox is an effective tool that specializes in increasing the efficacy of email marketing. Choose this platform if you want to integrate email checks into the email-sending process.

Best features:

  • Kickbox provides user-friendly email verification.
  • It offers an email spam checker and a disposable email checker.
  • Email verification API and deliverability consulting are some other available services.


We found transparent prices per verification on their website:

  • 100: Free
  • 500: $5
  • 1,000: $10
  • 2,500: $25
  • 5,000: $40
  • 10,000: $80
  • 100,000: $800
  • 250,000: $1,500
  • 500,000: $2,500
  • 1,000,000: $4,000

What we like: 

  • The platform is simple and intuitive.
  • They offer bulk email checking.
  • Kickbox delivers accurate results.
  • It provides a real-time email validation API.

What we don’t like: 

  • The cost of large-scale verifications is high.

Kickbox is a reliable tool popular with businesses of all sizes. While the price is high for large consumers, its precision and 95% deliverability guarantee promise effective campaigns.

14. Verifalia

Verifalia email verification tool

With features like real-time API, simple integration, compatibility with over 6,000 products, and direct access to Google Sheets, Verifalia provides a comprehensive and accurate email verification solution.

Best features:

  • Verifalia claims to be a fast and very accurate email checker.
  • The platform provides real-time email verification API.
  • They allow smooth integration of email validation widgets for all web forms.
  • It integrates with more than 6,000 tools.
  • It’s available directly in Google Sheets.


  • Ultimate: 25,000 daily credits, 5,000 users/apps, 100 overrides, $499/month
  • Enterprise: 6,250 daily credits, 1,000 users/apps, 50 overrides, $199/month
  • Professional (Most Popular): 1,250 daily credits, 100 users/apps, ten overrides, $49/month
  • Starter: 250 daily credits, five users/apps, five overrides, $9/month
  • Free: 25 daily credits, one user/app, Overrides, $0/month

What we like: 

  • Users of various technical skill levels may submit data for verification easily, thanks to the drag-and-drop interface.
  • They provide thorough verification data.
  • The tool offers three service levels (Standard, High, and Extreme).
  • Protects data using HTTPS/SSL settings.

What we don’t like: 

  • Although providing flexibility, beginners may find the many service levels and functionalities confusing.

Verifalia is a great choice for companies who appreciate an in-depth check of their email lists since it offers comprehensive verification services beyond basic validity checks.

15. Bounceless

Bounceless email verification tool

Here’s one tool that offers accurate email checks at wallet-friendly rates. Bounceless is an effective email verifier without many additional services.

Best features: 

  • Bounceless offers email finder services.
  • It provides detailed reports to measure the effectiveness of email campaigns.
  • The tool connects with third-party platforms related to email marketing.
  • Users can get precise email verification.


  • Basic: $29/month - 10,000 email verifications, 1,000 finder queries, 50 inbox placement, ten blacklist monitors.
  • Pro: $89/month - 50,000 email verifications, 12,500 finder queries, 100 inbox placement, 20 blacklist monitors.
  • Business: $199/month - 300,000 email verifications, 30,000 finder queries, 500 inbox placement, 50 blacklist monitors.
  • Enterprise: $899/month - 2,000,000 email verifications, 300,000 finder queries, unlimited inbox placement, 500 blacklist monitors.

What we like: 

  • We love their reliable and accurate results.
  • Their prices are reasonable.
  • Bounceless offers an advanced and easy-to-use interface.

What we don’t like:

  • Some other platforms offer more services, including segmentation strategies.

Bounceless has excellent reviews on G2 and a reputation for being effective and accurate. It offers fair rates for small and big users. The only downside is its range of services, which is a bit narrow and focused on email finding and validation.

16. EmailListVerify

EmailListVerify email verification tool

EmailListVerify introduces itself as a fast and accurate email checker. It offers competitive rates and comprehensive email cleaning.

Best features: 

  • Cleaning large email lists efficiently.
  • Removing spam traps.
  • Disposable email detection.
  • Providing real-time verification API.
  • Checking domain validity and determining if addresses can receive emails.
  • Integrating with popular platforms and apps.


  • 10,000,000 emails: $3,290 ($0.0003/email)
  • 5,000,000 emails: $1,990 ($0.0004/email)
  • 1,000,000 emails: $599 ($0.0006/email)
  • 250,000 emails: $349 ($0.0014/email)
  • 100,000 emails: $169 ($0.0017/email)
  • 50,000 emails: $89 ($0.0018/email)
  • 10,000 emails: $24 ($0.0024/email)
  • 5,000 emails: $15 ($0.0030/email)
  • 1,000 emails: $4 ($0.0040/email)

What we like: 

  • EmailListVerify offers fair prices for large quantities.
  • Its positive reputation and good reviews prove its effectiveness.

What we don't like: 

  • Right now, they offer integrations with only nine apps. However, they wrote on their website that there will be more integrations soon.

EmailListVerify is a solid option for small and big companies looking for accurate and fast list cleaning at fair rates. There aren't many integration options now, but we believe there might be more options shortly.

17. BriteVerify

Briteverify email verification tool

BriteVerify is probably not one the cheapest cleaners on this list, but it offers high speed and accuracy, including list and bulk scrubbing.

Best features:

  • BriteVerify offers real-time email verification.
  • Users can upload large email databases for bulk verification.
  • The platform provides details about the list's health in its reports.
  • It uses techniques like syntax error correction, domain checks, and SMTP verification.


  • 5,000 Verifications: $40 ($0.0080/verification)
  • 10,000 Verifications: $80 ($0.0080/verification)
  • 20,000 Verifications: $150 ($0.0075/verification)
  • 50,000 Verifications: $325 ($0.0065/verification)
  • 100,000 Verifications: $600 ($0.0060/verification)
  • 500,000 Verifications: $2,250 ($0.0045/verification)

What we like: 

  • We love the possibility of integrations in CRM platforms and popular platforms.
  • BriteVerify has a reputation as an accurate email checker.
  • The platform is designed to be usable regardless of the experience level.

What we don't like: 

  • The costs are high, especially for high numbers of validations.

If you appreciate quality and accuracy and don't mind spending more for your email verification, BrightVerify might be your dependable partner. It's a specialized service with a limited number of features. This powerful tool can help marketers with deliverability and lower bounce rates.

What is an Email Verification Tool?

An email verification tool is software designed to verify email addresses. Marketers use these services to eliminate unwanted addresses and make sure that all their emails are active, correct, and belong to real people. 

Some email validation services offer easy integration with email marketing platforms like MailChimp and HubSpot; they offer mobile applications in the App Store, as well as support documentation in English and other languages. The types of services and cleaning techniques used with these tools and their costs vary. 

While you can do some basic cleaning for free, most of these services come with a charge, especially more advanced and more reliable ones. To learn more about the specifics like free trials, security features, plans, credits, and current pricing, visit specific pages on their official websites.

Understanding the importance of verified email addresses is just the beginning. Dive deeper into how to acquire verified email lists for marketing success and elevate your email campaigns to new heights. This guide will offer actionable insights into building a robust foundation for your marketing strategies.

How Email Verification Works

Email verification is a complex process, and it can involve various techniques. Tools perform many actions to authenticate email validity, including the following:

Syntax Check: This is an initial step of email validation. Syntax check involves checking if formatting standards for business emails create an email address. Another function is eliminating the addresses with symbols that are not allowed in email addresses, like spaces, commas, colons, semi-colons, slashes, brackets, etc.

Business emails should have three distinctive parts:

  1. Username,
  2. @, and
  3. Domain

For example, if your name is Xxx Yyy and you work for Nike, your email address should look something like this - [email protected]. The tools will mark that email list as invalid if it doesn't look like that.

Mail Exchange: MX Records Check: Email checkers analyze the address's MX record in the Domain Name System (DNS) to determine if the address is functional or if the domain is set to receive messages.

Domain Validation: This is an essential technique because it determines whether the domain in the address exists or not. The domain is the last part of a professional email address, and it comes after the @ symbol. During the process of domain validation, email checkers eliminate addresses that have non-existing domains.

After domain verification, the process can advance to communication with the email servers to establish whether the email addresses can receive messages. This is a critical process for platforms like Gmail, Microsoft Outlook, or Yahoo to make sure the email actually exists and is active.

SMTP Verification: Simple mail transfer protocol interacts with the recipient's email server without sending an actual email. Its goal is to make sure that the mailbox exists and can receive messages. It recognizes email addresses that are active, well-structured, and capable of getting messages. If the result is positive, you can know that the address exists.

Role-Based Account Detection: Let's say you want to target CEOs or general managers. Role-based account detection detects various positions and departments, like "sales," "support team," or "quality control." These emails are active and valid, but an engagement rate could be low since they are usually shared between several people. This tool will help you eliminate those addresses belonging to employee groups so you can focus on more relevant ones or create specific strategies for these shared accounts.

Disposable Email Address Detection: Some email addresses are made for temporary use. There are several reasons for this; people want to avoid spam emails, don't want to leave their real email addresses when they make a purchase, or choose to hide their identities. Disposable email address detectors locate these addresses and remove them from your list.

Sender Policy Framework (SPF): This technique helps protect senders and receivers by detecting spammers who are trying to send emails in the name of their domain. Those messages often come with a company logo and look like regular daily messages. SPF confirms that the message comes from an IP address that the domain owner and administrators approve. 

Greylisting Detection: This filter involves detecting receivers who use greylisting methods so marketers can adjust their strategies accordingly.

What is greylisting? That's a protection system that some businesses use to avoid spammers. The recipient's server will automatically reject the email from an unknown sender with the message "try again later." Spam servers typically don't try again, while people who really want to get in touch do. This way, companies avoid unwanted spam messages. 

Catch-All Address Verification: The only goal this tool has is to find emails that accept all the messages sent to their domain, even if the mailbox with the typed username doesn't exist. Companies want to be sure to accept every piece of information coming to them, even if the sender made a typo or one of the users isn't active anymore. 

On the other side, marketers who have information about these email addresses in their list know what they can expect. Higher bounce rates from these recipients, as well as lower engagement, wouldn't be a surprise. Companies that want to maximize their efforts and minimize expenses will typically ignore these contacts.

Real-Time Verification: This technology offers comprehensive email address validation, getting rid of undesirable entries from the start. We'll cover it in more detail later in the article. Let's just say that this tool can bring many benefits since businesses can improve the accuracy of their email lists, significantly lower the chance of bounces, and raise the efficacy of their email campaigns.

Who needs this technology? The answer is simple - businesses who want to invest in high-quality data and improve the effectiveness of their email marketing efforts.

However, there's a super tool that eliminates the need for email verifying tools. Bookyourdata offers valid email lists to its clients. Every list is verified before you purchase it, so there's absolutely no need for third-party checkers! Their robust, built-in, 8-step real-time verification system delivers only valid emails!

Why Email Verification is Essential to Marketing Strategies

There are many reasons why email verification is essential to marketing strategies. A valid list is a basic element for higher engagement and email marketing success. Active and engaged users bring more clicks and conversions, ultimately leading to more conversions.

On the other hand, regular list validation helps avoid potential issues like spam traps, high bounces, and damaged brand reputation.

Clean lists serve multiple purposes and allow the following:

  • Targeted outreach 
  • More effective campaigns
  • Improved email deliverability
  • Positive sender reputation
  • Higher engagement 
  • Higher open, click-through, and conversion rates
  • Compliance with privacy laws
  • Positive sender reputation
  • Re-engagement strategies
  • Segmentation and tailored messaging
  • Optimized ROI
  • Lower bounce rates

Lastly, this service saves organizations money by focusing on relevant recipients, maximizing the outcome, and avoiding wasting money on irrelevant or inactive receivers.

Features of Effective Email Verification Tools

Let's explore the features that make email validation tools efficient!

Accuracy and Speed in Email Validation

Accuracy and speed in email verification play fundamental roles in email marketing.


High-accuracy email verification tools bring more precise results to marketers and businesses, identifying valid and invalid addresses. That makes their jobs easier and allows them to maximize the results and protect the company's reputation. Accurate data is crucial for precise targeting and reliable projections. Some tools advertise accuracy of up to an astonishing 99.9 percent.


Another feature that helps deliver excellent results in email marketing is how fast email checkers can verify contacts. Timing is crucial in the business world, and real-time verification lets marketers do their jobs faster, optimizing resources.

The ideal email verification tool should have these two features combined. High-speed and precise validation of large volumes of contacts push campaigns forward and empower quick actions, allowing marketers to focus on top-notch content.

Bulk Email Verification

The process of bulk email verification includes validating large numbers of email addresses successfully at the same time. Companies can quickly check thousands, even millions, of emails with this fantastic tool. The goal is similar to other features: to eliminate unwanted emails from the list, whether they are inactive, invalid, or suspicious, and boost the campaign's efficiency.

Almost all of the most popular tools (ZeroBounce, Hunter, etc) are bulk email verifiers. Some of those services offer detailed insights about the customer data in addition to email authentication. Those insights, such as categorizing emails based on their validity, can help marketers create more impactful strategies. 

Bulk email verification can transform the way you manage your marketing lists. If you're curious about this process and how to select the right tool, explore our comprehensive blog article on what a bulk email verifier is and how to choose it. Learn to streamline your marketing efforts for better efficiency and results.

Integration with ESPs/CRMs/Databases

Another way to boost the efficiency of email marketing campaigns is automatic integration with databases, CRM systems, and email service providers (ESPs). Connecting verification tools with ESPs lets email marketers automatically verify all the addresses, while integration with CRMs brings automatic customer record updates and eliminates invalid contacts.

Connecting databases with ESPs and CRMs provides real-time access to valid contacts and saves time by putting an end to manual data entry (that can cause mistakes). Therefore, this is an important strategy in enhancing effectiveness.

Real-Time Email Validation on Websites

Websites use real-time verification to check email addresses during the subscription process. This feature is possible because of an email verification API (Application Programming Interface) from an email verification service provider. Real-time verification on websites guarantees a high percentage of valid addresses in your list. 

The purpose and advantages of real-time verification are: 

  • Higher email deliverability rates
  • Preventing errors and typos during the sign-up process
  • Detecting potential frauds
  • Improved data quality
  • Lower bounce rates

Bookyourdata offers an all-in-one solution that eliminates the need for email verification and the above-mentioned services. Their 8-step real-time email verification feature allows you to skip an extra step that comes with email validation tools. Companies save time and money, knowing they don't have to deal with third-party services. Every address is valid from the start! Explore how Bookyourdata can simplify your email marketing strategy now!

Bookyourdata has robust prospects who are ready to buy today

API Availability for Email Verification

API allows developers to integrate email checking into custom systems and apps. This technology allows real-time validation with all its benefits to custom projects. 

Here are some of its significant benefits:

  • API solutions provide quick information about the legitimacy of email addresses.
  • It makes it possible for developers to customize the email verification procedure to fit the unique requirements of their business.
  • It guarantees the acquisition of fresh, legitimate contacts. 
  • API helps minimize mistakes, which boosts user engagement.
  • It also eliminates the need for manual list cleaning.
  • It locates and prevents fraud and disposable email addresses.

Key Insights on Email Verification Tools

  • Email verification tools validate email addresses to enhance email marketing campaigns by lowering bounces and spam complaints, improving open, click-through, and conversion rates, and protecting the sender's reputation.
  • Email checking is a complex procedure and involves syntax check, mail exchange (MX) records check, domain validation, SMTP verification, role-based account detection, disposable email address detection, greylisting detection, catch-all address verification, and real-time verification.
  • Check out our list of the seventeen best email validation tools on the market and choose the one that solves your specific problems.
  • The effectiveness of email checkers can be measured according to their accuracy, speed, bulk verification, integrations with databases/CRMs/ESPs, API availability, and real-time verification.

Frequently Asked Questions

Can Email Verification Tools Validate Emails in Real-Time?

Yes, many practical tools offer real-time verification. These are just some of them:

  • Hunter
  • ZeroBounce
  • NeverBounce
  • QuickEmailVerification
  • VerifyBee
  • Snov.io
  • BriteVerify
  • Mailgun
  • CleanEmail
  • EmailListVerify

Although all these tools (and many others) offer real-time validation services, three stand out as the best and most reliable. Hunter, ZeroBounce, and NeverBounce all have specific qualities that separate them from other email checkers. 

Let's explore those characteristics!

  • NeverBounce verifies email addresses at the point of input. It is famous for its high level of accuracy with its real-time validation.
  • ZeroBounce offers additional information about the contacts in addition to real-time verification. That includes location, demographics, and other valuable details.
  • BriteVerify provides real-time verification with a user-friendly interface. It is famous for its simplicity and accuracy.

How Often Should Email Lists Be Verified?

A company should verify their email list at least once a month. Organizations that prioritize accuracy clean their email lists even more frequently. 

Some people will disagree with this statement. However, if a firm utilizes the practice of cleaning the list on a regular basis, they can expect certain benefits and avoid some issues.

The benefits of monthly cleaning of your email list are the following:

  • Increased engagement - Regular list cleansing will eliminate subscribers who are not interested in your content, allowing you to focus on engaged ones. Engagement rates are a key factor for ISPs when evaluating your inbox placement. Greater deliverability is a result of higher engagement rates.
  • Better distribution of resources - Email lists can be active and valid at first and then suddenly become invalid. There are plenty of reasons for this, such as email account closures, employees quitting their jobs or being fired, or domain updates. Regular list hygiene will prevent wasting resources regardless of why emails suddenly become inactive.
  • Segmentation - Focusing on active and valid contacts only allows you to target those individuals more precisely, tailoring content that matches their fields of interest. Accurate segmentation can lead to higher engagement, leading to effective and fruitful marketing campaigns.

Are There Any Free Email Verification Tools Available?

Yes! Free email validation tools do exist. They offer basic services, like checking single contacts or analyzing small lists to find risky emails. However, their services are often unreliable. We already mentioned the importance of clean email lists in digital marketing. Don’t try to save money on list cleaning because the consequences can be devastating. 

Even a single bad address can cause a lot of trouble. Some of those problems are these four:

  • Higher bounce rates - If you constantly send messages to invalid addresses, you'll face higher bounce rates, which will signal email service providers, or ESPs, to mark you as spam. Your deliverability will then be much lower, resulting in less successful email marketing campaigns.
  • Protecting Sender's Reputation - If you keep sending emails to inactive or non-existent recipients, ISPs might label your messages as spam. Monthly elimination of inactive users will protect you from such issues, and your mail will more likely reach desired mailboxes. 
  • Legal compliance issues - Privacy laws like GDPR request that your receivers should only be users who voluntarily want to get your messages. Cleaning your list once a month will help you stay on the right track, respect receivers' privacy and rights, and avoid problems with applicable regulations.
  • Damaged brand reputation - Sending unwanted emails repeatedly or sending messages to the wrong addresses might damage your reputation. Your prospects and current customers can lose trust in your company. Regular list scrubbing, however, can completely prevent this.

While there are some examples of free email checkers on the market, companies that look for reliability and accuracy should avoid them because of all the possible issues mentioned above.

To sum up, clean email lists are essential in every email marketing campaign, regardless of its scale, list size, or industry. Email checkers or verification tools play vital roles in email marketing, and some of them provide more than simple checks; you can integrate them into your favorite apps, they can give you more details about your contacts, and deliver very accurate results. Keeping your email lists clean is crucial for maximizing the impact of your marketing campaigns. 

For detailed strategies and best practices on maintaining your list's health, read Bookyourdata’s guide on how to clean your email list effectively and their other insightful articles. These tips will help you avoid common pitfalls and ensure your emails reach their intended audience.

Skyrocket your email marketing success with Bookyourdata and get 10 free leads without a credit card! Reach inboxes, boost your online presence, and engage your loyal audience!



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