Email Verification ServiceBouncer Guarantee
Accuracy you can trust. Results you can prove.
Forget the marketing talk. You need real accuracy – results you can count on, not just hope for. Bouncer gives you industry-leading precision, true coverage, and a guarantee built for teams that care about every single contact.
About Bouncer’s Guarantee
Real accuracy, a promise you can count on.
Anyone can claim they’re precise. We prove it.
Bouncer delivers accuracy above 99%: when we say an email is deliverable, it is.
When we say it’s undeliverable, it’s undeliverable.
That’s not just a statistic. It’s a promise that protects your business, your campaigns, and your customer relationships.
- Over 99% accuracy in identifying which addresses are safe
- 98% coverage – only 2% of emails are ever marked “unknown,” because we refuse to risk a real contact for the sake of a number
- 100% accuracy for undeliverable: If we say you shouldn’t send, you can trust us completely – no customer lost due to our mistake
- Full refund guarantee: If we say deliverable and it bounces for a real, objective reason (not just spam), you get your money back. No strings attached.
“We’d hate for you to lose contacts because of our mistake. That’s why we are biased against false negatives – even if it means a few more unknowns. Your reputation, not our ego. If there’s even a slight doubt, we’d rather say ‘unknown’ than risk you losing a real contact. That’s what accuracy means to us.”
Radek Kaczyński, Bouncer’s CEO
Ensuring that emails are sent to valid addresses, marketers can improve their email deliverability, open and click-through rates, and conversion rates, resulting in more effective email management and better ROI.
How it works
How Bouncer’s accuracy works for you
Getting started with Bouncer is straightforward and honest—just the way email verification should be.
- Upload your list: Drop in your emails, whether it’s hundreds or millions.
- Bouncer gets to work: Our advanced system checks each address for deliverability, using years of experience and cutting-edge technology.
- Receive clear results:
- Deliverable → You’re safe to send.
- Undeliverable → You’re protected from a bounce.
- Unknown → We’re not going to gamble with your list. If there’s even a small chance an address might be valid, we’d rather say “unknown” than risk you losing a real lead.
Those “unknowns” are often down to temporary misconfigurations, provider oddities, or just rare inconsistencies. We’d rather pause than make a bad call.
What it means for you
We care about protecting your reputation, your delivery rates, and your peace of mind. Bouncer’s guarantee goes further than numbers on a dashboard:
- Fewer bounces → Better inbox placement, more eyes on your message.
- No lost clients → 100% accuracy on undeliverables means you don’t risk genuine relationships over a false negative.
- Real refund policy → Every dollar you spend is covered. If our system gets it wrong for an objective, verifiable reason, we put it right. No hoops, no hidden terms.
- Enterprise-ready → Security, compliance, and audit trails are baked in, so you can prove your hygiene to anyone who asks.
“Our accuracy promise means you can finally relax about list hygiene. No more double-checking. No more second-guessing. Just a guarantee that does what it says.”
Jakub Zięcina, Bouncer’s CMO
Join the SaaS companies, digital agencies, and enterprise brands that already trust Bouncer to keep their email lists clean and deliverable.
Users love us
See Bouncer’s accuracy for yourself – risk free
Don’t take our word for it.
Run your first list, see the results, and judge for yourself. No credit card needed.
FAQ
What does Bouncer mean by “accuracy”?
When we say an email is deliverable or undeliverable, we mean it. Accuracy is our ability to get that answer right, over 99% of the time.
How long do results take?
Most lists are processed in minutes (180k/h), regardless of size.
Why are some results marked “unknown”?
We’d rather keep a contact safe than risk marking it as undeliverable when it’s not. Unknowns only appear if we can’t verify 100%, often due to temporary issues or rare provider behaviors.
What’s covered by the refund guarantee?
If we say an address is deliverable and it bounces for a real, objective reason (not spam or soft bounces), we’ll credit or refund you for that mail check, no questions asked.
