How ZeroBounce is different
ZeroBounce is different from many of the run-of-the-mill options in the email validationⓘ market. On top of an email validationⓘ tool used by more than 600,000 companies, ZeroBounce offers additional features to help you increase email deliverabilityⓘ and connect with real prospects.
Want to take a closer look? Here's an overview of ZeroBounce's features.
ZeroBounce features
ZeroBounce has the most complete set of email deliverabilityⓘ tools that caters to every email marketing need, from marketers who are just getting started to established major corporations. From email validationⓘ (single, bulk, and real-time) to authentication, ZeroBounce helps you bolster email performance and sales – with 24/7 customer support.
ZeroBounce features
Bulk & real-time email validation
Email deliverability tools
Email authentication tools
The No. 1 email validation service for 600,000+ clients
Bulk and real-time email validationⓘ
ZeroBounce offers both bulk and real-time email validation. When you use them together. you're assured that your email list is always clean and up-to-date. The real-time API integration is helpful for ongoing data collection and instant verification when someone enters an email address on any of your forms.
If you want to check emails on the go, ZeroBounce also gives you the option of a single email verifier. Just type in a contact and within seconds, you'll see if it's valid.
Verify+ from ZeroBounceⓘ
Verify+ from ZeroBounceⓘ does something other services cannot. Verify+ checks any Yahoo, AOL, and Verizon emails more likely to be disabled and may bounce. All email validationⓘ services faced a unique challenge in determining whether or not these accounts were disabled. ZeroBounce offers access to Verify+ free of charge to all customers using the email validationⓘ service.
Verify+ ensures 99.6% accuracy in verifying Yahoo-related email addresses. This feature helps you drastically reduce bounces from inactive accounts. Verify+ was an industry first, with other services offering no solution to this problem.
Email scoringⓘ
ZeroBounce's email scoring tool analyzes your email list quality so you can determine the high-value contacts: those most likely to engage with your emails. This can take your email marketing ROI to the next level. The email scoring tool is beneficial for those looking to verify catch-all email addresses.
Activity Data
ZeroBounce's Activity Data gives you information about the engagement of your email list, allowing you to target the most active and interested recipients. This tool will enable you to see to what degree your subscribers have been active in their inboxes in the past 365+ days.
Email deliverabilityⓘ tools
ZeroBounce offers a comprehensive set of tools to ramp up email deliverability, including blacklist monitoring, mail server testing, and inbox placement tests, ensuring your emails reach the intended recipients.
Email authenticationⓘ tools
ZeroBounce supports email authentication protocols like DMARC, DKIM, and SPF, which protect your domain from spoofing and bolster your sender reputation. With Yahoo and Google's new sender guidelines, any individual or company sending mass email messages is highly likely to encounter email deliverability issues if they fail to set up email authentication.
Email finderⓘ
The email finderⓘ allows you to uncover valid email addresses associated with specific domains, making it easier to create targeted email lists. You can even look up a particular individual's email address based on their company's domain name.
Try the email finderZeroBounce customer support
ZeroBounce is known for having world-class customer support, available 24 hours a day, 365 days a year, through chat, email, and toll-free by phone. ZeroBounce users consistently compliment the support team's expertise and rapid response times. With ZeroBounce, you can reach a real person in just a few seconds and by phone, from Monday to Friday from 5:00 AM to 7:00 PM EST.
ZeroBounce customer reviews
Based on almost 1,100 reviews, ZeroBounce scores 4.7 out of 5 on Trustpilot. Reviewers highlight the platform's accuracy, comprehensive features, and stellar customer service.
On G2, ZeroBounce has a 4.6 rating based on over 400 reviews, reinforcing its reputation as a preferred email validationⓘ tool for many email marketing professionals.

Data security at ZeroBounce
ZeroBounce is strongly committed to data security and satisfies the benchmarks set by GDPR and other international requirements. ZeroBounce uses advanced encryption and security protocols to keep your data protected.
When compared to other email marketing platforms, ZeroBounce's commitment to security protocols is among the highest in the industry. ZeroBounce uses an advanced encryption method to keep all user data secure, and routine security audits ensure a higher level of compliance and safety.
ZeroBounce keeps the following security certifications:
- GDPR compliance: Ensures all of your data adhere to EU regulations.
- SOC 2 Type 2: This allows periodic assessment of ZeroBounce, certifying that ZeroBounce maintains standards in data security, processing integrity, availability, privacy, and confidentiality.
- ISO/IEC 27001: ZeroBounce's attainment of this international standard establishes comprehensive data security management.
- PCI Compliance: Protects transactional financial data with firewalls and antivirus tools and assesses any threats.
- HIPAA compliance: Assures full compliance with all security standards associated with United States healthcare policies and practices.
- CCPA compliance: Full compliance with California consumer privacy regulations.
- Data Privacy Framework (DPF): ZeroBounce follows all regulations, providing companies with the capability to transfer personal data securely during transatlantic commerce.
Is Mailtester worth it?
Mailtester is not a competitive choice in the email validationⓘ tool space. Even a peripheral look at the website shows poor grammar and amateur writing. When you engage with the service, it doesn't redeem itself. It's just an overall low-quality experience.
The support is borderline nonexistent, and it almost seems the service is intended to get an occasional purchase and create an illusion that there are more than a couple of people behind the site.
But could Mailtester be worth it? Let's take a look at the pros and cons.
Pros of using Mailtester:
- Mailtester is relatively cheap.
- Mailtester gives you ten free credits if you sign up (Note: the website says 100, but it's actually ten.)
Cons of using Mailtester:
- The user experience is abysmal.
- The tools are borderline impossible to use – frequently, the platform doesn't work.
- You don't get a clear understanding of how effective the email validationⓘ tool is.
- The phone number is busy every day and night, meaning you must communicate through chat. It can take hours to get a response via chat.
- Oftentimes, the support team doesn't understand the problem and cannot help you.
Verify 100 email addresses free
While Mailtester is a choice you could make, ZeroBounce offers real usability as well as any feature you may need, higher accuracy, and much greater value for your money. Also consider that ZeroBounce actually deposits 100 free email verification credits into your account as soon as you sign up. But, it doesn't stop there. Every month, ZeroBounce replenishes your account with 100 additional credits, which doesn't cost you a cent.
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