Everything about free email verification, the eBounce API, bounce checking and pricing.
Email verification checks whether an email address is real and can receive mail. eBounce validates syntax, MX records, disposable domains and role-based addresses in real time through a simple REST API.
A bounce checker predicts whether your emails will bounce before you send them. Hard bounces (invalid addresses) hurt your sender reputation and get you blocklisted. Verifying your list with eBounce first keeps bounce rates low.
Three things: 10,000 free verifications every month (100x the industry standard free tier), a dead-simple REST API with no credit card required to start.
10,000 email verifications per month, single and batch API access, the web tester, and community support. No credit card required. The quota resets on the 1st of each month.
Four layers: (1) syntax validation per RFC standards, (2) MX record lookup to confirm the domain accepts mail, (3) disposable/temporary email detection across hundreds of providers, (4) role-based address detection (info@, support@, sales@). Deep SMTP mailbox verification is rolling out next.
A catch-all domain accepts mail to any address (e.g. anything@company.com). Verification services mark these as risky because the mailbox may not exist. eBounce flags catch-all domains so you can treat them separately.
Single verifications typically return in under a second. Batch requests verify up to 500 emails per call; enable deep SMTP checks for higher accuracy when you need it.
Yes — POST up to 500 emails per batch request to /api/check-batch. Each email costs one validation from your monthly quota.
The API returns HTTP 402 with a quota_exceeded error. Paid plans with higher limits are coming soon — the free tier stays free.
We never sell or share your verification data. API keys are hashed, sessions are cookie-based, and you can revoke keys anytime from your dashboard.
Yes — call GET /api/check from your backend when a user registers. Invalid, disposable and role-based addresses get rejected before they enter your database.
Create a free account, copy your API key from the dashboard, and make your first request. It takes under a minute and no credit card is required.