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Accurate, fast and secure email validation service

You invest for better email marketing ROI. We help you find valid emails and connect with your customers. Boost your inbox placement and open rates with 99% accurate real-time email validationⓘ software and email deliverabilityⓘ tools like Email Scoringⓘ, Email Finderⓘ, email testing, and sender reputation monitoring.

Try It Free

Get 100 free monthly email verifications when you sign up with a business/premium domain.

Accurate, fast and secure email validation service
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The No. 1 email validationⓘ service for 400,000+ clients

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Test the email validator

Find out how ZeroBounce delivers superior bulk email verificationⓘ with 99% accurate results. Enter an email address into the email list verification toolⓘ or upload a file to verify a list of email addresses for free.

In seconds - learn why ZeroBounce is the best email verification service available.

OR

How to validate your email lists with ZeroBounce

Clean your email list(s) with email verification software in three simple steps:

STEP 1

STEP 1

Create an account

STEP 2

STEP 2

Upload your email list for email delivery verification

STEP 3

STEP 3

Download your new clean email listⓘ

Send email campaigns with confidence. Join ZeroBounce - the best email verification service available.

Try It Free

Get 100 free monthly email verifications when you sign up with a business/premium domain.

Email deliverabilityⓘ services that help you reach the inbox

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Email Validation
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Email Activity Data
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Email Scoring
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DMARC monitor
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Blacklist Monitor
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Email Testing Tools
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Email Finder
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Email Warmup

Clean your list for better email deliverabilityⓘ

Use the best email validationⓘ services to clean bulk email lists, reduce your bounce rate, increase your open rate, and conquer email deliverabilityⓘ issues by identifying:

ZeroBounce ImageClean your list for better email deliverabilityⓘ

ZeroBounce ImageInvalid email addresses

ZeroBounce ImageAbuse emails

ZeroBounce ImageSpam traps

ZeroBounce ImageDisposable emailsⓘ

ZeroBounce ImageCatch-alls

Plus - identify 30+ email types and block invalid emails automatically with the real-time email list validation API.

Clean your email list
A circle graph showing the number of complete validations, the email michael.scott@dundermifflin.com undergoing email validation, a report showing email validation results, and a smiling woman

Clean your list for better email deliverabilityⓘ

Use the best email validationⓘ services to clean bulk email lists, reduce your bounce rate, increase your open rate, and conquer email deliverabilityⓘ issues by identifying:

ZeroBounce ImageClean your list for better email deliverabilityⓘ

ZeroBounce ImageInvalid email addresses

ZeroBounce ImageAbuse emails

ZeroBounce ImageSpam traps

ZeroBounce ImageDisposable emailsⓘ

ZeroBounce ImageCatch-alls

Plus - identify 30+ email types and block invalid emails automatically with the real-time email list validation API.

Clean your email list

Increase email engagement

Finding valid email contacts is just the first step.

After cleaning your list, add Activity Data to your report and find your most active subscribersⓘ. Gain invaluable insights as to which contacts open, click, forward, or unsubscribe from emails in the last 30-180 days. You pick the period; we generate the report.

Activity Data is perfect for helping email marketers segment their lists for optimal campaign performance. Boost your email engagement by targeting those subscribers that you know are ready to open your emails.

Find my Activity Data

Score catch-all email addresses

Make every email count by scoring each catch-all or valid email address on your list.

Use AI email scoringⓘ to analyze segments of your email list. The AI generates a score from 1-10, indicating how likely you are to reach a real person. Scoring takes the guesswork out of those questionable email leads and evaluates each email address based on past and recent behavior.

Leads cost time and money. Make every new email address in your database count by getting actionable data. Improve email engagement and achieve better email marketing ROI.

Score my emails

DMARC monitoring & Reporting for email security

Ever received one of those spammy, phishing emails from someone impersonating a company?

You could be next.

Email security experts - take advantage of dynamic, multi-domain DMARC monitoringⓘ and protect your company from email fraud.

ZeroBounce ImageIn-depth domain verification

ZeroBounce ImageEasy DMARC policy setup and customization

ZeroBounce ImageAutomated reporting for every email sent

ZeroBounce ImageInstant alerts for any suspicious email activity

We make DMARC monitoring simple so that you can keep your emails authenticated and secure.

Monitor my domain

24/7 Blacklist checker and monitoring

Do you know if your company’s email reputationⓘ is at risk?

Retain control of your email domain and IP reputationⓘ with round-the-clock blacklist monitoring tools. Monitor your domain with over 200 blacklist service providers and identify issues before they hurt your business.

Perfect for monitoring:

ZeroBounce ImageStandard email domains

ZeroBounce ImageIPv4 addresses

ZeroBounce ImageIPv6 addresses

It’s your company’s reputation. Protect your email deliverabilityⓘ and activate your blacklist monitorⓘ for 24/7 coverage.

Try 24/7 monitoring

Test email deliverabilityⓘ

Test your email content, inbox placement, and email server configuration before your bounce rate increases.

ZeroBounce ImageEmail server testing - Test your email content with 20 email addresses before sending your next campaign. Plus, compare your emails against more than 100 email tests, including email header information, RFC-based testing, DNS, email port checks, DMARC analysis, and more.

ZeroBounce ImageInbox placement testing - After verifying a list of email addresses, test your subject lines and email content to see if you’re being flagged by spam. Create the perfect email and stop email bounces before they happen.

Test and adjust until your emails reach the inbox!

Test my emails

Free email search for B2B

Search for new business email addresses reliably. Our Email Finderⓘ allows you to search out new business email contacts with just a name and domain.

Identify possible company email patterns and validate the address in real time using proprietary technologies. We never process your data to share with our users.

Email Finderⓘ is perfect for any industry. Used in marketing, sales, journalism, and beyond, boost your cold email outreach by finding new leads, recruiting new talent, and making new connections. Reach high-quality contacts and decision-makers now.

Find new B2B emails

Warm your domain for inbox visibility

Improve your company’s email domain and IP reputationⓘ with positive email interactions.

Warmup provides an automated way to send company emails to trusted email addresses. We’ll provide healthy engagement, including opens, clicks, favoriting, and forwarding to build or repair your reputation.

Whether you have a brand-new domain or a domain with a problematic history, Warmup gradually builds and repairs your email deliverabilityⓘ so that more customers see your emails in the inbox.

Try Warmup Now

Why choose ZeroBounce’s email verification software?

You want results from your email campaigns. We help you achieve them.

Discover why we’re the right partner.

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99% accurate email verification - guaranteed

Validate single emails, bulk lists, or signups in real time with our powerful tools.

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Top Security & Compliance

  • SOC 2 Type 2 & ISO-27001- certified
  • GDPR, HIPAA, CCPA
  • CloudFlare Enterprise Security
  • WAF / DDoS Protection

Learn more about security

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The lowest “unknown” rates

The average “unknown” result rate for 2024 was

1.69%

And, you’ll never pay for “unknown” results.

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24/7 customer support

Average live chat wait time: 20 seconds

Average reply time: 17 minutes

Comprehensive user docs

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99.99% API Reliability

Compatible with 16 languages, including Rust, Ruby, Python, JavaScript, and more.

Average API response time:

1.09s

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4.8/5 Stars

Based on more than 2,565 reviews

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Fewer catch-all results with Verify+

The average “catch-all” result rate for 2024 was

10.8%

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Get a personalized plan in <24 hrs

A dedicated account manager will create the perfect plan for your business. Legal and security reviews are returned in less than 24 hours.

ZeroBounce Image

99% accurate email verification - guaranteed

Validate single emails, bulk lists, or signups in real time with our powerful tools.

ZeroBounce Image

Top Security & Compliance

  • SOC 2 Type 2 & ISO-27001- certified
  • GDPR, HIPAA, CCPA
  • CloudFlare Enterprise Security
  • WAF / DDoS Protection

Learn more about security

ZeroBounce Image

The lowest “unknown” rates

The average “unknown” result rate for 2024 was

1.69%

And, you’ll never pay for “unknown” results.

ZeroBounce Image

24/7 customer support

Average live chat wait time: 20 seconds

Average reply time: 17 minutes

Comprehensive user docs

ZeroBounce Image

99.99% API Reliability

Compatible with 16 languages, including Rust, Ruby, Python, JavaScript, and more.

Average API response time:

1.09s

ZeroBounce Image

4.8/5 Stars

Based on more than 2,565 reviews

ZeroBounce Image
ZeroBounce Image
ZeroBounce Image
ZeroBounce Image

Fewer catch-all results with Verify+

The average “catch-all” result rate for 2024 was

10.8%

ZeroBounce Image

Get a personalized plan in <24 hrs

A dedicated account manager will create the perfect plan for your business. Legal and security reviews are returned in less than 24 hours.

ZeroBounce email verification for all your favorite platforms

Connect ZeroBounce’s real-time email verification APIⓘ to the email marketing and delivery platforms you love. Leverage the email list verification toolⓘ for bulk email verificationⓘ or real-time email list cleaningⓘ as visitors submit their addresses.

Enjoy email delivery verification for more than 60 popular website builders, CRMs, email delivery service providers, and more.

View all integrations
Connect the email verification API to check emails in real-time

Guaranteeing email deliverabilityⓘ

When it comes to the best email verification sites, there’s only one name for these clients.

Belkins marketing team featured in ZeroBounce case study showing how email validation can improve B2B lead generation

CASE STUDY

How The Links Guy Improves Email Bounce Rates with ZeroBounce

When The Links Guy and his team hit a 10% bounce rate, they knew something had to change. With their sender reputation at risk, they couldn’t afford to ignore their email list issues any longer. That’s when they reached out to ZeroBounce for help.

Read More

Belkins marketing team featured in ZeroBounce case study showing how email validation can improve B2B lead generation

CASE STUDY

How Belkins Masters B2B Lead Generation with Better Data

A high bounce rate can damage your entire email marketing program – and Belkins learned that first-hand. See how ZeroBounce helped the B2B lead generation agency reduce bounce rates by more than 19% and achieve fast, consistent growth.

Read More

MochaBear Marketing expert Elizabeth Jacobi featured in ZeroBounce case study showing how BarCups managed to increase email engagement

CASE STUDY

How BarCups Increased Email Engagement to 78% with ZeroBounce

When the team at BarCups wanted to boost email click rates, they thought changing email service providers would be enough. Learn how their marketing expert at MochaBear Marketing identified an opportunity to increase email engagement with ZeroBounce – by working on their email list quality.

Read More

A woman reads the ZeroBounce case study for the Workplace Depot on a tablet that she’s holding with her left hand.

CASE STUDY

How The Workplace Depot reduced their email bounce rates and stopped spam complaints

The Workplace Depot is one of the largest health, safety, and workplace equipment providers for businesses throughout the United Kingdom. But with a 4.60% bounce rate and one too many spam reports, they knew their data quality was poor. Learn how ZeroBounce helped them clean and segment their data with ease.

Read More

Woman from MediaShares smiling at the results of their ZeroBounce case study.

CASE STUDY

How ZeroBounce helped MediaShares reduce bounces to almost 0%

MediaShares is a marketing and funding consultancy that helps companies market their offerings to investors through email campaigns. The problem is that a 12% bounce rate caused their ESP to cancel their service. ZeroBounce identified and eliminated every toxic email address and got their ESP to reinstate their account.

Read More

A woman from Coldlytics checks her laptop to see her ZeroBounce case study.

CASE STUDY

How Coldlytics delivers accurate data with ZeroBounce’s email validation service

Coldlytics is a company that helps brands identify and build highly-targeted prospects for their email lists. The problem is that most new lists feature as much as 50% invalid addresses. By working with the ZeroBounce API, they remove every harmful address and present 100% reliable data to their customers.

Read More

A woman from Image Source checks her laptop to see her reduced bounce rate from her case study.

CASE STUDY

How ZeroBounce reduced Image Source bounces from 19% to 0.85%

As a leader in office and managed IT tech, Image Source came to ZeroBounce with a 19% bounce rate. Our 99% accurate email validation service identified and segregated invalid email addresses, lowering their bounce rate to just 0.85%

Read More

Joana Wiebe of Copyhackers smiles, talking about her ZeroBounce case study results.

CASE STUDY

How Copyhackers keeps a clean email list with ZeroBounce

Joana Wiebe and her team at Copyhackers know a thing or two about email marketing. With ZeroBounce, the company reduced its bounce rate from an impressive 0.36% to 0.22%. “Aside from fewer concerns about bounce rates, the biggest benefit of using ZeroBounce is sending more confidently.”

Read More

Belkins marketing team featured in ZeroBounce case study showing how email validation can improve B2B lead generation

CASE STUDY

How The Links Guy Improves Email Bounce Rates with ZeroBounce

When The Links Guy and his team hit a 10% bounce rate, they knew something had to change. With their sender reputation at risk, they couldn’t afford to ignore their email list issues any longer. That’s when they reached out to ZeroBounce for help.

Read More

Belkins marketing team featured in ZeroBounce case study showing how email validation can improve B2B lead generation

CASE STUDY

How Belkins Masters B2B Lead Generation with Better Data

A high bounce rate can damage your entire email marketing program – and Belkins learned that first-hand. See how ZeroBounce helped the B2B lead generation agency reduce bounce rates by more than 19% and achieve fast, consistent growth.

Read More

MochaBear Marketing expert Elizabeth Jacobi featured in ZeroBounce case study showing how BarCups managed to increase email engagement

CASE STUDY

How BarCups Increased Email Engagement to 78% with ZeroBounce

When the team at BarCups wanted to boost email click rates, they thought changing email service providers would be enough. Learn how their marketing expert at MochaBear Marketing identified an opportunity to increase email engagement with ZeroBounce – by working on their email list quality.

Read More

A woman reads the ZeroBounce case study for the Workplace Depot on a tablet that she’s holding with her left hand.

CASE STUDY

How The Workplace Depot reduced their email bounce rates and stopped spam complaints

The Workplace Depot is one of the largest health, safety, and workplace equipment providers for businesses throughout the United Kingdom. But with a 4.60% bounce rate and one too many spam reports, they knew their data quality was poor. Learn how ZeroBounce helped them clean and segment their data with ease.

Read More

Woman from MediaShares smiling at the results of their ZeroBounce case study.

CASE STUDY

How ZeroBounce helped MediaShares reduce bounces to almost 0%

MediaShares is a marketing and funding consultancy that helps companies market their offerings to investors through email campaigns. The problem is that a 12% bounce rate caused their ESP to cancel their service. ZeroBounce identified and eliminated every toxic email address and got their ESP to reinstate their account.

Read More

A woman from Coldlytics checks her laptop to see her ZeroBounce case study.

CASE STUDY

How Coldlytics delivers accurate data with ZeroBounce’s email validation service

Coldlytics is a company that helps brands identify and build highly-targeted prospects for their email lists. The problem is that most new lists feature as much as 50% invalid addresses. By working with the ZeroBounce API, they remove every harmful address and present 100% reliable data to their customers.

Read More

A woman from Image Source checks her laptop to see her reduced bounce rate from her case study.

CASE STUDY

How ZeroBounce reduced Image Source bounces from 19% to 0.85%

As a leader in office and managed IT tech, Image Source came to ZeroBounce with a 19% bounce rate. Our 99% accurate email validation service identified and segregated invalid email addresses, lowering their bounce rate to just 0.85%

Read More

Joana Wiebe of Copyhackers smiles, talking about her ZeroBounce case study results.

CASE STUDY

How Copyhackers keeps a clean email list with ZeroBounce

Joana Wiebe and her team at Copyhackers know a thing or two about email marketing. With ZeroBounce, the company reduced its bounce rate from an impressive 0.36% to 0.22%. “Aside from fewer concerns about bounce rates, the biggest benefit of using ZeroBounce is sending more confidently.”

Read More

Industry-leading email verification software

ZeroBounce is a Leader in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Small Business Leader in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Momentum Leader in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is Best Est. ROI in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce has become a Small Business Best Relationship for G2 for the Spring of 2025 as the email verifier.
ZeroBounce has become a Small Business Best Support for G2 for the Spring of 2025 as the email verifier.
ZeroBounce has become a Mid-Market Easiest To Use for G2 for the Spring of 2025 as the email verifier.
ZeroBounce has become a Mid-Market Easiest Setup for G2 for the Spring of 2025 as the email verifier.
ZeroBounce has become a Small Business Fastest Implementation for G2 for the Spring of 2025 as the email verifier.
ZeroBounce is a High Performer in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce has become an Enterprise High Performer for G2 for the Spring of 2025.
ZeroBounce is a Small Business High Performer in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce has become a Mid-Market High Performer for G2 for the Spring of 2025 as the email verifier.
ZeroBounce is Leader in Europe in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Small Business Leader in Europe in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Small Business Leader in India in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Small Business Leader in Asia in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Small Business Leader in Asia Pacific in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is Leader in EMEA in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Small Business Leader in EMEA in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a High Performer in Asia in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce has become a Mid-Market High Performer in Asia for G2 for the Spring of 2025 as the email verifier.
ZeroBounce is a Small Business High Performer in Asia in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a High Performer in Asia Pacific in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce has become a Mid-Market High Performer in Asia Pacific for G2 for the Spring of 2025 as the email verifier.
ZeroBounce is a Small Business High Performer in Asia Pacific in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a High Performer in Canada in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a High Performer in EMEA in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Small Business High Performer in EMEA in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a High Performer in Europe in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Small Business High Performer in Europe in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a High Performer in India in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce has become a Mid-Market High Performer in India for G2 for the Spring of 2025 as the email verifier.
ZeroBounce is a Small Business High Performer in India in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a High Performer in Latin America in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce is a Small Business High Performer in Latin America in the Email Verification category with G2 for the Spring of 2025.
ZeroBounce earns a G2 Users Love Us badge in the Email Verification category with G2 for the Winter of 2025.

ZeroBounce, a Multiple Inc. 5000 List Honoree

Inc. Magazine recognized ZeroBounce four times on Inc. 5000, the list celebrating the fastest-growing companies in America. What’s more, ZeroBounce made the Inc. 5000 Regionals list twice, which further fueled our passion to build top-tier email validation and deliverability tools.

Every day, ZeroBounce helps businesses like yours land their emails in the inbox and boost email marketing ROI. For its role in other companies’ success, ZeroBounce also received the Inc. Power Partner Award. Our company is among “the best B2B providers for small and medium-sized businesses” in the world.

ZeroBounce is featured on the Inc. 5000 list and is the recipient of the Inc. Power Partners Award

As Featured On

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The best email verification service starts with ZeroBounce

Try It Free

Get 100 free monthly email verifications when you sign up with a business/premium domain.

Man smiling with an email icon next to his image. He use ZeroBounce the best email verification system.
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All rights reserved.

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