Short answer: for a one-off list NeverBounce is the cheaper verifier: $8 per 1,000 emails, and the credits stay usable for 12 months. ZeroBounce costs more per email on pay-as-you-go ($39 for 2,000, about $0.02 each) but gives 100 free validations every month, never charges for "unknown" results, and keeps credits alive while you subscribe. Both prices were read on the vendors' pricing pages on 19 October 2026.
What you pay for 1,000, 2,000 and 10,000 checks
| Job | NeverBounce | ZeroBounce |
|---|---|---|
| Try it | Free test credits, number not stated; no card needed | Freemium: 100 validations a month, refilled monthly |
| 1,000 emails once | $8 (pay-as-you-go pack) | $39, the smallest pay-as-you-go purchase, covers 2,000 |
| 2,000 emails once | $16 | $39 |
| 10,000 emails a month | Growth plan, $49 a month | ZeroBounce ONE from $99 a month, minimum 10,000 credits |
| 250,000+ a month | Enterprise, priced by sales | ONE subscription sized by volume; annual billing advertised as 20% off |
Sources: neverbounce.com/pricing and zerobounce.net/email-validation-pricing, read on 19 October 2026. ZeroBounce shows a 15% discount on pay-as-you-go credits when autopay is on; the table uses the list price.
The rules that change the real cost
The headline price per email matters less than three rules that decide how many of your credits are wasted.
- Do you pay for "unknown"? Some mail servers will not say whether a mailbox exists. ZeroBounce states it never charges for an unknown result. NeverBounce's pricing page does not say how unknown results are billed, so check that with them before you run a list full of corporate domains, where unknowns are common.
- Do duplicates cost? Both say no: ZeroBounce removes duplicate addresses for free, and NeverBounce's Growth plan charges only for new, unique emails.
- When do credits die? NeverBounce pay-as-you-go credits expire 12 months after purchase. ZeroBounce credits never expire while a ONE subscription is active and roll over month to month; without a subscription the page says expiry rules may apply.
Which fits which team
You clean a list a few times a year. NeverBounce. A 5,000-address list costs $40 in pay-as-you-go credits, and what you do not use is still there for the next list within a year.
You verify a small number of new leads every week. ZeroBounce's free 100 a month may cover it outright, and nothing is charged for unknowns.
You verify around 10,000 addresses every month. NeverBounce Growth at $49 is half the starting price of ZeroBounce ONE at $99. ZeroBounce is the one to test if your lists are heavy on catch-all company domains and unknown results eat a lot of credits, or if you also want its inbox placement and blacklist tests, which come in the same account.
Whichever you lean to, test first. Price per email tells you nothing about how many addresses each tool can actually classify on your data. Take 500 addresses from your own CRM, including some you know bounced, and run them through both free allowances. Compare three numbers: how many come back valid, how many come back unknown or catch-all, and how many of your known bounces each one flags. The tool with fewer unknowns on your list is usually the cheaper one, whatever the price table says.
Verifying is the last step, not the first
Both tools check addresses you already have. If the list does not exist yet, verification comes after finding the people and their emails. Lead generation tools like Scrupp cover that earlier part by exporting LinkedIn, Sales Navigator, or Apollo searches and looking up verified emails and phones for the people in it. Combined with a dedicated email verifier, this ensures your outbound campaigns reach valid, active inboxes.