Your browser does not support JavaScript!


Accurate, fast and secure email validation service.

Expert's Overview

ZeroBounce is a US-based renowned email verification service that is also one of the fastest-growing companies in the email verification industry (according to INC. 5000). Their API integration can validate any email addresses to stop unwanted signup and have cleaned email lists. Even they provide a well-managed API dashboard to look over the daily and monthly reports. Their A.I. technology is beneficial to get the score of your email address that is identified as the catch-all but quite risky to send through A.I. scoring you get a proper idea of whether to send an email on each email address or not.  ZeroBounce pricing is much higher in contrast to other providers like MyEmailVerifier & Debounce. While the other two verifies 10k emails in less than $30, Z.B. is asking $60 for the same.  Worried about your data privacy? You don't need to be with Zero Bounce. They are Swiss EU-US privacy shield certified vendors. There are only 2-3 vendors who are having this certificate.  Zero Bounce is a qualitative choice for the ones who look for extra information about the email validation results and informative analysis.


  • Good verification accuracy (98%)
  • Provides military-grade security
  • A.I. for email scoring level of email list
  • Live chat support 24/7
  • ZeroBounce is GDPR, SOC 2 and PCI compliant. 
  • Integrates with known ESP.
  • Pay as you go option.


  • Below average turnaround time
  • Takes longer to deliver the results

ZeroBounce - 22nd Most affordable ServiceWhile listing the email verifier services as the least costing placed on top, ZeroBounce stands on the sixth spot.

Number of Email Verifications Cost/Price
5000 Email Verifications $39
10000 Email Verifications $65
100K Email Verifications $390
500K Email Verifications $1100
1M Email Verifications $1755
2M Email Verifications $3050
2.5M Email Verifications $3812.5
  • Cost of verifying 2k to 100k emails is as low as $0.0039 per email for 100K emails.
  • The minimum order value is $16 for 2000 credits. The credit never expires.

Top 10 Most Affordable Email Verification VendorsHere we’ve arranged the top 19 Email Verification Vendors on the basis of how much they charge for verifying 10K emails.

(Cost for 10k Email verification)

See All Affordable Email Verification Vendors

ZeroBounce - Ranked 2nd Regarding Accuracy Percentage

  • We’ve audited their verification accuracy by checking 200 email addresses of mixed types (valid, invalid, greylisted, role-based, disposable, etc.). Out of them, 98% of emails accurately verified by ZeroBounce. It is the (2nd) best accuracy we’ve measured. Below is a more detailed analysis of our findings in the table.
Vendor’s self-quotation
Accuracy calculated in our Audit

Visit ZeroBounce

ZeroBounce - Accuracy Percentage Detected in Different Email Validations

From our in-depth survey, we've calculated ZeroBounce's accuracy as 98% . You can get profound details in the table below:

Top 10 Overall Most Accurate Email Verification Vendors

Let’s know how does ZeroBounce Accuracy surpasses the Industry standards.

ZeroBounce Accuracy Industry Average
Gmail 100 100
Yahoo 95 93
Outlook 100 98
Hotmail 100 98
AOL 100 90

ZeroBounce - Ranked 13th Fastest in Turnaround time Turnaround time is the time taken by any Email verification service to validate a given number of emails. Lesser the turnaround Time, faster the service is considered

  • ZeroBounce gives a quick analysis, which shows the overall health of the uploaded file within 6 to 7 minutes.
  • ZeroBounce consumes 450 minutes to deliver the resultant file of 10k email addresses. Time taken is on the higher side as it uses the Greylisting feature.

Average Industry Standards

ZeroBounce's Turnaround Time

Top 10 Vendors with Fastest Email Verification

(Turnaround Time per 10k Emails)

ZeroBounce - Ranked 15th for High Number of Free Trials Provided

  • ZeroBounce provides free 100 email credits per month. (Professional email account is required)
  • Users can verify these emails in bulk verification, single verification as well as integrate API and use free email verification credits
  • For free trial credit card is not required.

Daily 3 verifications available without signup

One Time 100 verifications available after signup

Credit card Not Required

Integration Options

  • ZeroBounce offers 45+ integrations
  • ZeroBounce integrates with leading ESPs like MailChimp and Constant Contact.

Advance Features

  • Bulk Email Validation API ZeroBounce has developed bulk email validation API which allows frequent customers to validate the emails without any manual process involved.
  • ZeroBounce has received the following certifications and accreditation, Cyber Smart Defence, PCI Compliance, ISIPP, ReturnPath, Certified Senders, EU GDPR Compliant, Privacy Shield Framework, BBB Accredited Business.
  • ZeroBounce's feature A.I scoring provides a score to catch-all email addresses from 0(bad) to 10(good) on the base of the bounce rate.
  • Email Bounce Validator: Email validation software tells you which emails will bounce. Scrub your list regularly so that your bounce rate never exceeds 2%.
  • Abuse Email Detection: These accounts have a history of marking emails as spam, and the next one could be yours. Email list verifier detects them to protect your sender reputation.
  • Gender Identification: Email validator identify the gender of some emails in your list. Also, if you upload a list with first names, they will add the gender. If you don't have names, and they find a name and add it to your list.

Major Clients

client1 client2 client3 client4 client5 client6 client7 client8

Sign up process

  • To sign-up on ZeroBounce, email verification and phone number verification is mandatory for completing the sign-up process.

App installation required?

  • ZeroBounce is a SaaS-based platform, which does not require any download or installation.

Formats for file Upload

  • You can upload your email list in .csv, .xls, .xlsx, and .txt formats.
  • If you upload a .csv file with a first name column, their system will use that information to find the gender of that email.
  • Email lists containing more than 20% mal-formed or blank emails will not be accepted.

Formats for file Download

  • Password protected encrypted zip file is given to download the results. A unique key will be sent on the registered email address for un-zipping the file.
  • The zip file will have files in CSV format viz. all results, abuse, catchall, do not mail, invalid and the original file
  • You will also have a PDF file containing an executive summary of the results.
  • ZeroBounce stores result only for 30 days.

Customized / scalable services

  • ZeroBounce offers customized/scalable services.
  • All you need to do is, contact their support team and explain your requirement.
Request a quote

Customer Support

  • Apart from the prominent services, their support is commendable.
  • ZeroBounce provides quick support via email, answers are detailed and informative. It takes 1 to 3 hours to respond to the email ticket.
  • They provide 24/7 support via Live Chat.
  • ZeroBounce replies on live chat instantly.
  • ZeroBounce answers the user's technical queries with great explanation and details.
  • They also provide support via phone during business hours, i.e. Mon-Fri (5 am-7 pm). EST
Claimed By ZeroBounce
Live Chat
Live Chat
  • Excellent
  • Good
  • Average
  • Not available

Real-time verification through API

  • ZeroBounce provides API support for avoiding incorrect email addresses from signing up on your mailing list.
  • Different languages like PHP, Python, JQUERY, .NET, Java is supported for API.
What Email Verification solution do you use?
How likely is it that you would recommend Verify to a friend or colleague?

ZeroBounce Reviews


Irene Iris said "amazing service, I would use it everytime I need to validate emails."


Robil Hossain said "Compare various Email Verification service providers and select the best one for your requirement"

Does not Recommend

James P. said "We're using Zerobounce since last 3 months. Best part of their service is their accuracy and speed. We're almost receiving 98%+ accuracy with every validation we do with Zerobounce."


Makailol Charls said "Accuracy of Zerobounce is not as good as it is mentioned on their website."

Does not Recommend

Freya De Vries said "The best!! 24/7 support, fast and accurate, the perfect email validation service!"


Vlad Stoian said "Great service, very accurate and reasonably priced, very good service and I recommend it highly for their standards in quality and care given to the customers."


Adrian Littera said "Best e-mail verification service available. Very pleased."


George Nmn said "best email validator, greast customer service , cheap prices"


Straton Dan-Andrei said "The best email validation software. High accuracy. Professional team. Great services."


Alexandru Ghitan said "Fast, easy to use and accurate results! I definitely recommend ZeroBounce!"


Anca Vasile said "ZeroBounce it is the best email validation service"


Ask the Experts

Do you have any question or Experience to share? Ask the expert about ZeroBounce.

Ask A Question

From the business

About - ZeroBounce

Established in 2017.

ZeroBounce is among the most prominent vendors in terms of accuracy. Setting it apart from competitors, ZeroBounce complements the incredible email verification service through performance analytics and adding missing data to your email address list [such as subscriber's first and last name, gender, city, state, country and IP registration information at no extra cost].

An equally impressive feature we found during our audit was seamless 24*7 customer support, available to customers around the clock. With its highly secured data cleansing process, ZeroBounce has acquired some pretty big-time clients; namely Siemens, Tripadvisor, Shopify, Comodo, Allstate etc.

Although ZeroBounce is the premier email validation service, it has fallen behind by not providing ESPs integrations. $35 is the minimum payment amount that ZeroBounce charges for 5000 credits. The credit never expires. But if you were to verify a smaller volume, there are other alternatives you can elect for. Certainly deserving of first place by accuracy, ZeroBounce ranks lower in cost per email verification.

ZeroBounce - Data Protection

ZeroBounce uses “Cloudflare” for surefire content delivery which ensures additional defense against cyber attacks and data breaches. ZB is one of the only email verification services that uses a military grade encryption algorithm to safeguard YOUR files and YOUR personal information.

ZeroBounce ensures data security by encrypting the files as well as protecting them through a password during the process of email verification. Only the registered user will have access to the files. ZeroBounce will never store any data in their system. After the email verification is completed, all the data and related aspects will be erased in maximum 30 days.

ZeroBounce - Privacy Policy

ZeroBounce complies with the EU-U.S. Privacy Shield Framework and the Swiss-U.S. Privacy Shield Framework as set forth by the U.S. Department of Commerce regarding the collection, use, and retention of personal information transferred from the European Union and Switzerland to the United States, respectively.

ZeroBounce - Hosting locations

ZeroBounce hosts its Email verification servers in the European Union.

Anti - greylisting technology

ZeroBounce allows for an comprehensive, 37 minute verification process for the email list because it deploys the anti-grey-listing technology. A lot of remote mail servers will issue a 421 response code initially, then after a period of time up to 30 minutes, they will allow the email address to be validated appropriately.

If any file has an email address that encounters a single 421 response on, it will delay the entire file processing time by up to 35-37 minutes.

Liviu Tanase

Liviu Tanase

Visit ZeroBounce
Compare ZeroBounce with