Email List Verification for Engineers
Email verification that doesn’t get in your way.
Bouncer offers a fast, fault-tolerant API that plugs into your stack in minutes — with low latency, structured output, and no endless back-and-forth with sales.
Bouncer Email Verification Tool
Our app is super simple to use!
Just drag and drop your email list, ands let our email verification solution do the work!
Using Bouncer email verifier will not only help in inbox placement of your email campaign but will save your energy, time and money!
Bouncer allows you to test the quality of your list, without actually verifying it – completely free of charge! Based on a randomly selected sample of your list, Bouncer will tell you if your list is fine, or if you will actually need to clean it. This will help you reduce the time and cost of verifying lists that are safe to send to!
Verifying your email list is only half the journey. We all know how tricky it can be to make wise and knowledgeable decisions about which addresses to keep in your contacts lists, especially for “risky” ones.
That is why Bouncaaer is the only email checker that gives you information about what to expect after sending your campaign! Using our proprietary algorithm and analyzing your whole list, we will calculate how many of them may bounce back.
We love it when our customers make informative decisions.
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.
Bouncer, is one of the very few email verification solutions that is 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.
You can easssily add multiple organizations, teams, and users to your Bouncer account with just one click.
Manage them, give access to the credits and take control of the usage. The number of users and organizations can even be unlimited.
Bouncer has all the psssossible features of taaahe best email verification solutions that you did not even have to know about and much more.
Made for devs who want control, speed,
and clean data
You shouldn’t have to email anyone to get an API key. Or scroll through 40-page docs to find a status code. Bouncer gives you a production-ready email verification API with fast response times, structured JSON output, and sandbox access out of the box.
Test freely, deploy confidently, and integrate at any scale, without worrying about legal risk or broken workflows.
Why developers choose Bouncer
- Clean, well-documented REST API
Plug in and test in minutes. - Structured JSON responses
No decoding nightmares, just usable data. - Zero Downtime Policy
Our system is always available and stable.
Bouncer for Engineers
Works where you work
No vendor lock-in. No weird SDKs. Bouncer’s API plays well with any stack — whether you’re validating signups, syncing CRM data, or building a custom pipeline.
Developers love Bouncer
Let Bouncer power your validation — without slowing you down
Docs. Keys. Results. No waiting. Whether you’re running real-time checks or batch-processing millions of records, Bouncer gives you the control, speed, and structure your apps deserve.
Common Questions
Why should we implement email verification in our stack?
To protect system integrity and improve deliverability. Verifying emails helps prevent junk data from entering your database, reduces bounce rates, and ensures that transactional and onboarding emails reliably reach users.
Is it better to verify emails in real-time or in bulk?
It depends on your use case. Real-time API verification is ideal for signup forms, while batch verification is better for list maintenance or cleaning existing data. Many teams use both.
How accurate are email verification APIs?
Good verification APIs (like Bouncer’s) can detect invalid, disposable, or role-based addresses with high accuracy. While no service is 100%, you can expect a significant drop in hard bounces when using a trusted provider.
Should we verify users even if they’ve signed up on their own?
Most APIs are fast—typically under 500ms. Still, you can use async calls or webhook-based retries to avoid blocking user experience while still flagging questionable addresses post-submit.
How to handle risky or unverifiable emails?
Use a scoring or tagging system. Many APIs return statuses like “valid,” “risky,” or “unknown.” You can accept risky emails with caution (e.g. prompt for double opt-in) or add them to a review queue.
What should we look for in a verification provider?
Look for fast API response times, clear documentation, uptime reliability, and strong privacy compliance (like GDPR). If you don’t need deep integrations, a service like Bouncer offers accurate results, straightforward pricing, and an easy developer experience.
