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ZeroBounce Reviews

Is ZeroBounce really accurate as everyone says? Check it out here

Expert's Reviews on ZeroBounce

One of the fastest-growing companies in the email verification industry (according to INC. 5000) is ZeroBounce, a US-based email verification service. With their API integration, you can prevent unwanted sign-ups and have clean email lists. A well-managed API dashboard allows you to look over daily and monthly reports. They use AI technology to score your catch-all email address, which is risky to send through A.I., providing you with a better idea of whether to send an email to each email address. While other providers like MyEmailVerifier and Debounce verify 10k emails in less than $30, ZeroBounce charges $60. You don't have to worry about your data privacy with Zero Bounce. They are Swiss EU-US privacy shield certified vendors. There are only 2-3 vendors with this certification. Zero Bounce is a qualitative choice if you are looking for extra information about the email validation results and informative analysis.


  • Accuracy is good
    With its claims of 99% accuracy, ZeroBounce gave 98% accuracy when we audited it. This builds trustworthiness in the eyes of users, and it stands second behind MyEmailVerifier when it comes to accuracy.
  • A highly secure environment
    Whenever it comes to protecting users' data, ZeroBounce stands out. In addition to providing military-grade protection at the time of email verification, it also encrypts data. Additionally, your data will be deleted immediately after 30 days of email verification.
  • Facility for scoring
    With ZeroBounce, you can grade email addresses from 0 to 10 based on your subscribers' interaction with your emails. 10 is the highest quality rating, and 0 is the lowest. With this score, you can quickly determine which contacts to target and whether they will convert into your final customers.
  • Commendable customer service
    Like MEV, ZeroBounce has excellent customer service. You can contact them by email, phone (during business hours), or live chat (24/7/365). When we audited, they replied promptly to our technical questions in detail. The response time is under 15 minutes.

    With ZB, there are no limits on the number of files or the size of files per day, hour, etc.
    Over the last three years, the ZB unknown rate has consistently been under 1%.
  • An effective integration facility
    Users can integrate ZeroBounce accounts with 45+ third-party applications, including Mailchimp, Active Campaign, AWeber, and more. As a result, you, as a user, can easily upload your email list from one of these 45+ apps and manage your marketing activities all in one place.
  • Detection of gender and location
    ZeroBounce’s system detected the gender and location effortlessly when we uploaded an email list file in CSV format with the first name column. This is where ZeroBounce stands out from other email verification systems.
  • Turnaround time is quick
    It took ZeroBounce 43 minutes to verify 10K emails, whereas the average industry standard T/A time for 10K emails is 582 minutes. Therefore, ZeroBounce's actual T/A time is less.


  • Slight costly

    Compared to other vendors like RemoveBounce, DeBounce, etc., ZeroBounce charges $65 for 10K email addresses. In addition, ZeroBounce has a minimum purchase of 2000 credits at $16, which puts it at 20th place among 35+ vendors audited by LCA for pricing/affordability.

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

Number of Email Verifications Cost/Price
5000 Email Verifications $39
10000 Email Verifications $65
100K Email Verifications $390
500K Email Verifications $1500
1M Email Verifications $2250
  • For 100K emails, the cost of verifying 2k to 100k emails is $0.0039 per email.
  • For 2000 credits, the minimum order value is $16. The credit never expires."

Top 10 Most Affordable Email Verification VendorsHere we’ve arranged the top 10 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 6th Regarding Accuracy Percentage

  • We conducted an assessment of ZeroBounce's verification accuracy by examining 200 email addresses of varying types (valid, invalid, greylisted, role-based, disposable, etc.). Of those tested, 98% of emails were accurately verified by ZeroBounce, making it the 2nd most accurate result we have observed. In the table, you will find a detailed analysis of our findings.
Vendor’s self-quotation
Accuracy calculated in our Audit

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ZeroBounce - Accuracy Percentage Detected in Different Email Validations

From our in-depth survey, we've calculated ZeroBounce's accuracy as 83% . 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
Hotmail 91 0
AOL 78 0

ZeroBounce - Ranked 8th 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 provides a quick analysis within 6 to 7 minutes, showing the overall health of the uploaded file.
  • As a result of using the Greylisting feature, ZeroBounce takes 43 minutes to deliver the resultant file of 10k email addresses

Average Industry Standards

ZeroBounce's Turnaround Time

Top 10 Vendors with Fastest Email Verification

(Turnaround Time per 10k Emails)

Integration Options

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

Advance Features

  • Higher Level of Security: ZeroBounce provides military-grade security for its users' data.
  • Catch-all Email Detection & A.I. Scoring System: This email verifier detects catch-all email addresses with high accuracy, and it has an A.I. scoring system that allows for in-depth validation of the best contacts.
  • Enhanced Resultant Data: Based on the email addresses we provide, it can automatically detect names, genders, and locations.
  • Deduplication at No Cost: Additionally, ZeroBounce enables its users to deduplicate their email list without spending any credit and detect 29 types of risky email addresses to maintain the list's hygiene.
  • No Charge for Unknown Emails: This tool doesn't charge anything for unidentified email addresses. These types of emails are generally returned as "unknown."

Major Clients

client1 client2 client3 client4 client5 client6 client7 client8 client9 client10 client11 client12 client13 client14 client15 client16 client17

Sign up process

  • ZeroBounce requires email verification for sign-up.

App installation required?

  • The ZeroBounce platform is a SaaS-based service that requires no 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.
  • ZB doesn't accept email lists containing more than 20% malformed or blank emails.

Formats for file Download

  • Files in the zip file will be in CSV format, including all results, abuse, catchall, do not mail, invalid, and the original.
  • You will receive separate files based on the status of your email: Valid, Invalid, Catch-All, SpamTrap, Abuse, Do Not Mail, and Unknown.

Customized / scalable services

  • ZeroBounce provides customized/scalable services.
  • You just need to contact their support team and explain your requirements.
Request a quote

Customer Support

  • Their support is commendable, in addition to the superior services they provide.
  • You can reach ZeroBounce via email if you have any questions. The answers are detailed and informative. It takes 1 to 3 hours for ZeroBounce to respond to your email ticket.
  • Live Chat Support is available 24/7.
  • With great explanations and details, ZeroBounce answers the user's technical questions.
  • In addition, they provide phone support during business hours, i.e., from 5 am to 7 pm EST Monday through Friday.
Claimed By ZeroBounce
Live Chat
Live Chat
  • Excellent
  • Good
  • Average
  • Not available

Real-time verification through API

  • You can prevent incorrect email addresses from signing up for your mailing list using ZeroBounce's API.
  • The API supports different languages such as PHP, Python, Jquery, .NET, and Java."
What Email Verification solution do you use?
I Use This
I Use This
I Use This
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"


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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 of 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 a comprehensive, 37 minutes 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, it will delay the entire file processing time by up to 35-37 minutes.

Liviu Tanase

Liviu Tanase

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