Email verification · Updated
Bouncer review (2026): accurate on work domains, at a mid-range price
Bouncer got 93 of 100 labelled addresses right in our test and gave definite answers on accept-all work domains where budget verifiers hedge. It costs about half of ZeroBounce, credits never expire, and unknowns are free. It passed one fake address as valid with full confidence.
pipe0 neither competes with nor buys from Bouncer. How we review
Our score for Bouncer, the average of four criteria
Nearly as accurate as the best verifiers we tested on work domains, at about half ZeroBounce's price, with credits that never expire. One fake passed as valid with a perfect score keeps it out of first place.
Best for
- Outbound teams that want definite answers on work domains for less
- Buying credits once and using them over months or years
- Agents that need to verify an address before writing it anywhere
Skip it if
- A single fake passed as valid is unacceptable for your domain
- You need SOC 2 or ISO 27001 paperwork
- You verify huge consumer lists where the cheapest check wins
Upload a list or call one endpoint. 100 free credits, four plain statuses with a reason, and about 25 native integrations.
93 of 100 right and it resolved accept-all work domains, but it passed a made-up address as deliverable with a perfect score, the one mistake a verifier exists to prevent.
0.6 cents a check at 10,000 and 0.2 cents at a million, about half of ZeroBounce. Credits never expire and unknowns are free.
An official hosted MCP server with OAuth and real-time and batch APIs, but 1,000 requests a minute and only a Java SDK.
Bouncer at a glance
Bouncer in our benchmark
We ran the same 100 labelled addresses through every verifier we test and scored each verdict against the known answer. These are the results from October 2026.
| Verifier | Accuracy | Real confirmed | Fakes caught | Fakes passed | Real rejected | Undetermined | Median time |
|---|---|---|---|---|---|---|---|
| Bouncer | 93% | 47 of 50 | 46 of 50 | 1 | 2 | 4 | 0.5 s |
| LeadMagic | 97% | 49 of 50 | 48 of 50 | 0 | 1 | 2 | 2.0 s |
| ZeroBounce | 96% | 47 of 50 | 49 of 50 | 0 | 2 | 2 | 0.3 s |
| MixRank | 93% | 47 of 50 | 46 of 50 | 0 | 3 | 4 | 1.3 s |
| Emailable | 70% | 36 of 50 | 34 of 50 | 1 | 1 | 28 | 0.3 s |
| MillionVerifier | 66% | 31 of 50 | 35 of 50 | 1 | 1 | 32 | 0.7 s |
Bouncer returned the same verdict as other providers 67 to 95% of the time
ZeroBounce (95%)
MixRank (92%)
MillionVerifier (67%)
How we tested
- Every verifier got all 20 real Gmail addresses, all 20 fake Gmail and Outlook addresses, and all 10 addresses at nonexistent domains right, except one real Gmail address Bouncer marked risky. The differences are on work domains.
- Bouncer's one fake passed as valid was a random mailbox at hubspot.com. Emailable passed the same address; the other four rejected it.
- One real address was rejected by every verifier. A sign-in 45 days earlier proves the Google account then, not the address today, so it may be a labelling error.
- Median times are from uncached calls, but not all from the same run: Bouncer and Emailable in October 17 runs, the others on October 6.
- Each test ran on 100 records.
- Known-valid addresses are pipe0 users with a live Google sign-in in the last 45 days; known-invalid addresses are synthetic, with no person behind them.
- Catch-all, unknown, and risky verdicts count as undetermined, never as wrong. Only a fake passed as valid or a real address called invalid is an error.
Run ids: 20261017T173041Z-245c. How we test
What is Bouncer?
Bouncer checks whether an email address will accept mail before you send to it. It started in 2017 in Wroclaw, Poland, keeps its data in EU data centers, and sells mostly to marketing and outbound teams through list uploads, an API, and about 25 integrations, from HubSpot and Mailchimp to lemlist and Make.
Each check returns one of four statuses (deliverable, risky, undeliverable, or unknown) with a reason and a 0 to 100 score. Around verification, Bouncer sells a deliverability kit, a signup form widget, and automatic cleaning of CRM contacts.
How it did in our test
We ran 100 labelled addresses through six verifiers. Fifty were real: pipe0 users who had signed in with Google in the previous 45 days, 30 on work domains and 20 on Gmail. Fifty were fake: random mailboxes at Gmail, Outlook, and well-known company domains, and addresses at domains that don't exist.
Bouncer got 93 right, tied with MixRank and behind LeadMagic (97) and ZeroBounce (96). It confirmed 47 of the 50 real addresses and caught 46 of the 50 fakes.
Its strength is work domains. Bouncer flagged 17 of our 30 real work domains as accept-all, the kind of server that takes mail for any address, and still confirmed 16 of those addresses as deliverable. MillionVerifier and Emailable returned catch-all for most of the same addresses, which leaves the decision to you.
Its weak spot is one answer. A random mailbox we made up at hubspot.com came back deliverable with a perfect score of 100. LeadMagic, ZeroBounce, MixRank, and MillionVerifier all rejected it. Sending only to Bouncer's valid results would have bounced once in our test; with ZeroBounce or LeadMagic, never.
It also rejected two real addresses, one of which every verifier rejected, and marked one real Gmail address risky where every other verifier said valid.
What it costs
Pay-as-you-go starts at $8 for 1,000 checks and falls to $60 for 10,000 and $2,000 for a million. That is about half of ZeroBounce ($129 for 10,000) and more than MillionVerifier ($39). A monthly subscription takes 20% off.
Credits never expire, and unknown results and duplicates are free. New accounts get 100 credits.
Bouncer for developers and agents
The real-time API takes one GET per address and allows 1,000 requests a minute. It answered in a median of half a second in our test, with nothing left unknown. A batch API takes up to 500,000 addresses per job. The only official SDK is for Java, so most teams call the REST API directly.
Bouncer runs an official MCP server at api.usebouncer.com/mcp with OAuth
sign-in, documented for Claude and ChatGPT, so an agent can verify an address
before it writes it to a CRM or a sequence.
Who should buy Bouncer
Buy Bouncer if you send to work addresses and want answers on accept-all domains without paying ZeroBounce prices, especially if you buy credits in bulk and use them slowly. It is the best value of the verifiers we tested on work domains.
Pick ZeroBounce or LeadMagic instead if a single fake passed as valid costs you more than the price difference, or if you need SOC 2 paperwork. For consumer lists, MillionVerifier is just as accurate and cheaper.
Bouncer pros and cons
Pros
Answers on accept-all work domains
Bouncer flagged 17 of 30 real work domains as accept-all and still confirmed 16 of those addresses. A budget verifier called 18 of the same 30 catch-all.
Close to the top on accuracy
93 of 100 labelled addresses right: 47 of 50 real ones confirmed and 46 of 50 fakes caught, with only 4 verdicts left undetermined.
Fair billing
Credits never expire, unknown results and duplicates are free, and a check costs about half of what ZeroBounce charges.
Ready for agents
An official MCP server at api.usebouncer.com/mcp with OAuth sign-in, at no extra cost, plus a median of 0.5 seconds per check in our test.
Cons
One fake passed with full confidence
A random mailbox at hubspot.com came back deliverable with a score of 100. Every other verifier but one rejected it, so that send would have bounced.
Occasional odd rejections
It rejected 2 of our 50 real addresses and marked one real Gmail address risky. One of the rejections every verifier shared.
No security certifications
Bouncer stores data in EU AWS data centers and publishes a DPA, but makes no SOC 2 or ISO 27001 claim.
Only one SDK
The API is simple REST, but the only official library is for Java.
Bouncer pricing
Bouncer has a free plan. Paid plans start at $8 for 1,000 checks, pay as you go.
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | 100 credits on signup. |
| Pay as you go | $8 to $2,000 | 1,000 checks for $8, 10,000 for $60, 100,000 for $400, 1 million for $2,000. Credits never expire. |
| Monthly subscription | 20% off pay as you go | The same credits every month at a 20% discount. Unused credits don't expire. |
- One credit per check. Unknown results and duplicates are free.
- Bouncer refunds or credits a check marked deliverable that hard bounces.
- The Deliverability Kit (inbox placement, blocklist and DNS checks) is a separate subscription from $25 a month.
Prices as of Oct 17, 2026, from Bouncer's pricing page.
Bouncer alternatives
| Alternative | Pick it when |
|---|---|
| ZeroBounce | You want no fake passed as valid and SOC 2 paperwork, and can pay about twice as much per check. |
| LeadMagic | You want the most accurate verdicts we measured and don't mind 2 seconds a check. |
| MillionVerifier | Your lists are mostly consumer addresses and price per check decides. |
Frequently asked questions
Is Bouncer accurate?
In our test it got 93 of 100 labelled addresses right: 47 of 50 real addresses confirmed and 46 of 50 fakes caught. Only LeadMagic and ZeroBounce scored higher. It passed one fake address as valid.
How much does Bouncer cost?
Pay-as-you-go starts at $8 for 1,000 checks. 10,000 checks cost $60 and a million cost $2,000. A monthly subscription takes 20% off. Credits never expire, and unknown results are free.
Bouncer or ZeroBounce: which is better?
ZeroBounce was slightly more accurate in our test, 96 against 93, and passed no fake as valid. Bouncer costs about half as much per check and its credits never expire. Both resolve most accept-all work domains.
Does Bouncer handle catch-all domains?
Better than most. It flagged 17 of 30 real work domains in our test as accept-all and still confirmed 16 of those addresses, where MillionVerifier and Emailable returned catch-all for most of them.
Does Bouncer have an API and an MCP server?
Yes. It has real-time and batch APIs and an official hosted MCP server with OAuth sign-in, documented for Claude and ChatGPT.
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