Cloud validation services charge $0.003-0.015 per email. Validating 100K emails costs $300-1,500. With BounceBuster: $19 once, process 100K or 10M emails - the price never changes.
Here's what cloud services charge vs. what you'd pay with BounceBuster:
| List Size | ZeroBounce | NeverBounce | Hunter.io | BounceBuster |
|---|---|---|---|---|
| 10,000 | $65 | $80 | $149/mo | $19 |
| 50,000 | $260 | $300 | $399/mo | $19 |
| 100,000 | $400 | $500 | $399+/mo | $19 |
| 250,000 | $750 | $1,000 | Enterprise | $19 |
| 1,000,000 | $2,400 | $3,200 | Enterprise | $19 |
Cloud service prices are per batch or per month. BounceBuster is a one-time payment - validate as many emails as you want, as often as you want.
Cloud services charge per email because every email costs them server time, bandwidth, and infrastructure. BounceBuster runs on YOUR computer, so our costs don't scale with your usage.
BounceBuster is a desktop application. It uses your CPU, your memory, your network connection. We don't pay for servers to process your emails.
DNS and MX lookups are free. Your computer resolves domain records directly. There's no API to meter, no queue to manage, no bandwidth to bill.
We build the software, you buy it once. No recurring revenue pressure means we don't need to charge per email, per month, or per feature.
Running locally isn't just cheaper - it's fundamentally more private. Your email lists are never uploaded to any server.
No cloud uploads - your email lists stay on your hard drive
No third-party data processing - you are the sole processor
No data retention by vendors - delete your files and the data is gone
No account required - no vendor even knows you exist
GDPR-compliant by architecture - no DPA needed, no cross-border transfers
No caps, no credits, no tiers. Process 10K, 100K, or 10M emails.
RFC-compliant syntax checking. Catches typos, invalid characters, and malformed addresses.
Checks domain existence and configuration. Identifies expired or fake domains.
Verifies the domain can receive email. No emails are sent - just DNS lookups.
Drag and drop CSV or Excel files. Auto-detects email columns.
See exactly why each email passed or failed. Export clean lists for your campaigns.
Process thousands of emails per minute with multi-threaded DNS resolution.
All future updates included. No upgrade fees, no new subscriptions.
What we don't offer: BounceBuster does not perform SMTP mailbox verification (checking if a specific inbox exists on the mail server). This check requires sending data to external servers, which conflicts with our local-only approach. Format + DNS + MX validation catches roughly 90% of bounce-causing addresses, which is sufficient for most email campaigns.
Download BounceBuster and validate unlimited email lists for a one-time $19. No monthly fees, no credits, no cloud uploads.