An easy-to-use SaaS application that allows you to quickly verify mailing lists

Ultrafast, robust and easy-to-integrate email verification API

Easily connect your Bouncer account with marketing platform you love, and verify your email list effortlessly

Identify invalid, malicious, or fraudulent email addresses at the moment of entry.

Identify if your email list contains any toxic email addresses

Improve your email campaigns by enriching customer data with publicly available company information

Test your inbox placement, verify your authentication, and monitor blocklists

Get in touch with the best Email Deliverability Experts, and boost your Email Marketing

Featured

Read our original research based on a survey we ran on the state of email list hygiene practices

Email Verification API

Bouncer Email Verification API lets you validate email
address and verify its deliverability, in the way you want.

It’s easy to integrate, powerful, robust, secure,
ultrafast and affordable.

Email Verification and Validation API
designed for Developers by Developers

Easy to integrate

And well-documented Email Verification and Validation API

Supportive

Tech Team eager to help you design and integrate your solution with our robust Verification engine.

Reliable

With a zero-downtime policy and the highest on the market, true end-to-end availability.

Scalable

Generous rate-limiting, support of huge batch sizes, and high and configurable capacity per customer let us grow together.

How to start

Built for various use cases

Email Verification on…

Email Validation of contact lists uploaded by your user

  • If your IT system allows your users to upload multiple email addresses simultaneously, you could consider utilizing the power of Bulk Email Validation API.
  • Validate the validity of your user’s lists and ensure that only valid emails enter your database.

Email Verification before mass send-outs

  • If you want to fully protect your email infrastructure and IT systems, you might want to consider utilizing the power of the Bulk Email Validation API before sending bulk emails.
  • Verify email addresses before sending email messages to them.

And many more…

Registration and sign-up forms to prevent typos

This real-time email verification approach will prevent potential clients from mistyping their email addresses. Don’t lose a sale opportunity ever again; implement real-time email verification in your registration flow.

Email Validation to prevent registrations with disposable email addresses

Tired of people abusing your business? Minimize the damage and stop those who use temporary email addresses from registering with Bouncer’s Email Verification API.

Email Verification API to prevent free emails from sign-up

If you are running a B2B business and prefer only to store business emails, you could utilize information about free email addresses provided by the Email Validation API and ask your user to provide another address.

What Bouncer can do?

We Verify Unverifiable
Rich Output
Organization Management
Advanced Security Settings

Deep Verification of Catch-All and anti-spam filter protected Email Addresses

Bouncer is one of the very few email verification solutions that are capable of verifying sophisticated email set-ups and configurations:

  • Catch-All email addresses hosted by Google and Microsoft
  • Anti-Spam filter protected email addresses,
  • Email addresses hosted by niche providers.

This makes it the one with the highest coverage, the lowest amount of unknown results, and deep verification of catch-all email addresses.

Rich Output

We are info geeks and love meaningful data.

That is why Bouncer provides not only deliverability status and reason but also characteristics of an email address such as Score, Toxicity Flag, Email Provider, Role, Free and Disposable, Full Mailbox Flags etc.

Organization Management

You can easily add multiple organizations, teams, and environments and invite users to your Bouncer account with just a few clicks.

Manage them, give access to the credits and features, and control the usage.

The number of users and organizations can even be unlimited.

Advanced Security Settings

Turn on Multi-Factor Authentication on your account, and if necessary, all your users must enable it.

To limit access only to your corporate network, allow users / API calls from specific IP addresses or network ranges.

Control where your data is processed.

The power of Bouncer’s Email Verification 
and Validation API

Multiple endpoints, both synchronous and asynchronous, will meet your most sophisticated
email verification needs.

Super-simple Real-Time Email Verification API

Ultra-fast and easy to integrate with API when the key factors are simplicity, ease of integration, and immediate email verification results. Integrate in less than few hours and enjoy power of email verification and validation.

Powerful Batch Email Verification API

Robust and flexible API designed for complex applications of email verification. Our Team will be super-happy to support you through the whole journey – starting with design, finishing on final tests, and the release.

Why do best engineering teams use Bouncer API?

Performance

  • Batch size – Max. 500,000 email addresses. Recommended 1000 – 10,000
  • Speed – 180,000 email addresses per hour
  • Rate Limiting
    Batch – 200 requests per minute
    Real-time – 1000 requests per minute

Security

  • GPDR Compilant – Anonymized data in all parts of the system; possibility to remove all emails permanently
  • Data Safety – All data stored in AWS European Data Centers; Reliable Infrastructure
  • API key – The API key can be only passed in the header, not the URL

Ease of use

  • Support – Dedicated Support Team Members. Support is available via video, chat, and email.
  • API Documentation – Well-documented API with examples
  • Implementation – Basic API email verification – a few hours of development. More sophisticated email validation use cases – a couple of days of development
+4B
Verified Email Addresses
+0.5B
Bounces
Prevented
100%
Total
Uptime
<2%
Unknown
Results

What do our customers say?

Rafiul Hasan L.
Web Developer – Internet
Star filled Star filled Star filled Star filled Star filled
Everything, honestly! It's easy to use but yet very functional. Have lots of integration options, which is excellent. They initially gives a bounce estimate for each list just after uploading; it gives me a rough idea of whether I should verify this bunch of emails or not. Their customer support is fantastic.
Vincent B.
Growth Manager – Computer Software
Star filled Star filled Star filled Star filled Star filled
Simple, safe and robust API with relevant results. Great price-quality ratio new features to be released oftenly top UX
Adam Peterson
CEO VipeCloud
Star filled Star filled Star filled Star filled Star filled
We’ve chosen Bouncer, as their API is straightforward and offered batch and real-time verification options. The integration was also straightforward and the support was quick to respond.
Michael Messig
CTO ActivePipe
Star filled Star filled Star filled Star filled Star filled
We like Bouncer’s support, API is really easy to use and the service is very reliable! Additionally, Bouncer’s solution is scalable and fairly priced.
Lilia Tovbin
CEO BigMailer
Star filled Star filled Star filled Star filled Star filled
We chose Bouncer as our email verification partner for its highest accuracy, robust APIs, and great support. Our customers love the results and the product is constantly improving.
Ian W.
Founder & CEO – Information Technology and Services
Star filled Star filled Star filled Star filled Star filled
1 – very well priced 2 – API response is easier to understand than some others 3 – fairly easy to make a go / no go decision 4 – online support is easy to follow

Users from any company size love us!

EmailVerification_MomentumLeader_Leader
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Let Bouncer support your growth

Don’t waste your energy on email verification.
Let Bouncer handle it for you
 so you can focus on growing your business.