Settle the addresses
your verifier can’t
Standard verifiers give up on catch-all domains and hand you a pile marked unknown. BounceBrake’s proprietary verification turns that pile into a clear answer for every address.
One extra step between the tools you have
Your verifier
ZeroBounce, NeverBounce, MillionVerifier, Bouncer or your data provider sorts the list and leaves a pile marked catch-all, accept-all, risky or unknown.
Catch-allUnknownBounceBrake
Takes only that pile and resolves each address to a clear verdict.
Safe to sendWould bounceYour sending tool
The valid addresses go back into Smartlead, Instantly, your CRM or wherever you send from, by CSV, direct export or API.
SmartleadInstantly
The same path in the dashboard or the API
Step 1
Upload the risky segment
Drop a CSV of up to 100,000 unique addresses and pick the email column, or send addresses through the API one at a time or 100 per call.
Drop a CSV here
Up to 100,000 unique addresses
CSVUploadedq4-catch-all.csv
8,412 rows
Email columnfirst_namework_emailcompanyStep 2
See the cost before anything runs
We count unique, well-formed addresses. Duplicates and malformed rows are free, and nothing is charged until you press start.
Ready to start Example
- Rows in file
- 8,412
- Duplicates
- 391 free
- Malformed
- 61 free
- Unique addresses to verify
- 7,960
Start verificationCost
7,960 credits
Your balance
12,000
Step 3
We resolve every address
Our proprietary verification settles the catch-all and unknown addresses other verifiers can’t. Counts update live; most lists finish within 24–48 hours.
64%
resolved
Safe to send 3,912
Would bounce 1,182
In progress 2,866
Live counts, example data. Most lists finish within 24–48 hours.
Step 4
Take the clean list
Download all, valid or invalid rows as CSV with your columns kept, push valid leads to Smartlead or Instantly, or get a signed callback per address.
q4-catch-all.csv Completed
All rows 7,960Valid only 5,604Invalid only 1,701SSmartlead
5,604 valid leads added to “Q4 outbound”
POST /your-callback {"status": "valid", "identifier": "crm-48121"}
What you get back
Every address ends with one clear status. Results download as three CSVs (all rows, valid only, invalid only) with your original columns kept.
validSend to it. Keep the lead.
invalidRemove it before it reaches your campaign. Malformed addresses land here too, free.
unknownWe couldn’t reach a confident answer within 7 days. The credit is returned automatically.
pendingStill in progress. Counts update live in the dashboard and through the API.
Built so you don’t pay for waste
You see the price before it runs
After upload we count the rows, unique addresses, duplicates and malformed entries, and show the exact credit cost next to your balance. Nothing is charged until you press start.
Duplicates and typos are free
Addresses are de-duplicated without regard to case or spacing, and anything that isn’t a well-formed email is marked invalid at no charge.
No verdict, no charge
If an address can’t be settled within 7 days it’s marked unknown and the credit goes back to your balance automatically.
Credits are pooled
One balance serves every workspace in your account, with usage reported per workspace.
Use whichever suits the job
They all run the same verification and draw from the same credits.
Dashboard upload
Drop a CSV (up to 100,000 unique addresses per file), pick the email column, check the cost and start. You get an email when it’s done.
Start freeAPI
Verify one address, a batch of up to 100, or a whole CSV file. Poll for results or receive a signed callback.
API overviewStraight to your sender
Choose a Smartlead or Instantly campaign when you upload, and the valid leads are added when the file finishes.
IntegrationsFind out who’s really on your list.
Start with 100 free credits. Upload your catch-all segment and see the verdicts for yourself.
- No card needed
- Duplicates are free
- No verdict, credit back