Email Verification That Actually Stops Bounces

Email verification checks whether an address can actually receive mail before you send to it. It catches typos, dead mailboxes, disposable addresses and catch-all domains, so your campaigns reach real people and your sender reputation stays healthy. Some people search for it as "email verifer" or "email verificator"; it's the same thing.

Almost. Email validation usually means checking that an address is well formed and its domain exists; verification also confirms the mailbox can receive mail. BounceZip does both in one pass, so whether you call it an email validator or an email verification tool, you get the same six-layer result.

BounceZip runs six checks on every address: syntax, DNS, MX records, an SMTP handshake with the mail server, mailbox probing, and provider-specific signals. The result is a clear status plus a 0–100 deliverability score. It works as an online email verification tool in the dashboard, as email verification software for bulk files, and as an API. No email is ever sent to the address.

Customers who compare BounceZip results with their hard-bounce logs typically see 99%+ agreement. Accuracy stays high on catch-all domains because we probe past the accept-all response instead of marking the whole domain as risky.

A catch-all address sits on a domain that accepts mail for any name, whether the mailbox exists or not. A basic check can't tell a real inbox from a fake one, which is why most tools label every catch-all address "risky".

Yes. The Catch All Verifier runs extra probes, handles greylisting, and reads provider signals to estimate whether the specific mailbox is live. You get a score and a send, caution or skip recommendation instead of a flag.

Yes. Every new account includes 100 free credits with no card required. Use them for single checks, a small list, or your first API calls.

Yes. Upload a CSV, TSV or XLSX file and BounceZip finds the email column automatically, even in multi-sheet workbooks. Your other columns stay intact in the export.

Valid means the address is active and ready to use. Invalid means it is unlikely to receive email. Risky means the address may hurt campaign performance. Unknown means the mail server did not return enough information for a definite result. Catch-all and disposable are reported separately.

Up to 500,000 rows per file. Larger lists can be split across files, and every job can be paused and resumed from the dashboard or the API.

Yes. A single REST endpoint returns a JSON verdict in under a second on average, with bulk jobs, webhooks and official SDKs for JavaScript, Python, PHP, Ruby and Go. Every account gets an API key.

Yes. Lists are encrypted in transit and at rest, never sold or shared, and deleted automatically 30 days after a job completes, or sooner if you delete them. BounceZip is GDPR and CCPA compliant and offers a data-processing agreement.

No. Credits stay in your account until you use them. There are no subscriptions, no monthly fees, and nothing to cancel.