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NeverBounce is cheaper to start, at $8 per 1,000 credits, and suits one-off list cleaning. NeverBounce credits expire 12 months after purchase.
ZeroBounce costs more per credit on small purchases. ZeroBounce adds 100 free credits every month, an AI scoring tool for catch-all addresses and 24/7 support.
Choose NeverBounce if you clean lists a few times a year. Choose ZeroBounce if you validate every month or your list has many company domains.

| ZeroBounce | NeverBounce | |
|---|---|---|
| Free option | 100 credits every month | Free start with test credits, no card |
| Cheapest paid entry | $39 for 2,000 credits | $8 for 1,000 credits |
| 10,000 checks | $129 pay-as-you-go, or $99/month on ZeroBounce ONE | $80 pay-as-you-go, or $49/month on Growth |
| 100,000 checks | $649 pay-as-you-go, or $449/month on ZeroBounce ONE | $400 pay-as-you-go |
| Credit expiry | None while ZeroBounce ONE is active | 12 months after purchase |
| Unknowns and duplicates charged | No | Duplicates free |
| Catch-all result | “Catch-all”, plus an optional AI scoring tool | “Accept-all” |
| Best for | Monthly validation, B2B lists, extra deliverability tools | Occasional bulk cleaning on a budget |
Sources: ZeroBounce pricing, ZeroBounce billing FAQ, NeverBounce pricing, ZeroBounce ONE volume prices recorded by Activepieces, and volume prices recorded by Bouncer and emaillistvalidation.com. Check both calculators before you buy.
ZeroBounce is an email validation service that checks whether email addresses are deliverable before you send. ZeroBounce sells credits on pay-as-you-go and through the ZeroBounce ONE subscription.
ZeroBounce also offers an Email Finder, an AI scoring tool, Activity Data and deliverability tests. ZeroBounce lists 24/7 support by phone, email and chat.
NeverBounce is an email verification and list-cleaning service operated by ZoomInfo. NeverBounce sells credits on pay-as-you-go and through its Growth plan.
NeverBounce offers three main products: Verify (real-time checks), Clean (bulk lists) and Sync (automatic list cleaning). NeverBounce does not charge for duplicate addresses in a file.
NeverBounce is cheaper than ZeroBounce at almost every pay-as-you-go volume. ZeroBounce narrows the gap only on its subscription.

Credit expiry is the biggest difference between the two tools, and most comparisons leave out the conditions.

NeverBounce credits expire 12 months after purchase.
ZeroBounce credits never expire while you have an active ZeroBounce ONE subscription. For newer pay-as-you-go-only accounts, Bouncer reports that credits expire two years after the most recent purchase. Confirm the current rule before buying a large pack.
ZeroBounce claims 99.6% accuracy. NeverBounce’s own comparison describes up to 99.9% deliverability. ZeroBounce’s comparison page says NeverBounce offers a refund if your bounce rate goes above 3%. All of these figures come from the vendors themselves.
Independent tests on other comparison pages are small: one used 10 addresses, another 563. Accuracy also depends on the list. B2B lists of company domains behave differently from consumer lists of Gmail and Yahoo addresses.


A catch-all (or accept-all) domain accepts mail for any address, so a verifier cannot confirm whether a specific mailbox exists. Many company domains on Google Workspace and Microsoft 365 behave this way, so B2B lists often contain many catch-all addresses.
NeverBounce labels these addresses “accept-all”. You decide whether to send to them or suppress them.
ZeroBounce labels these addresses “catch-all”. ZeroBounce also offers an AI scoring tool, which uses credits, to estimate how likely a catch-all address is to be real.
Send to catch-all addresses in smaller batches and watch bounces. Why no validator can be fully certain about catch-all domains explains the limits.
| ZeroBounce | NeverBounce | |
|---|---|---|
| Bulk list upload | Yes | Yes |
| Real-time API | Yes | Yes |
| Automatic list re-cleaning | Through subscription tools | Sync product, Growth plan |
| Extra tools | Email Finder, AI scoring, Activity Data, deliverability tests | AI-selected leads and scoring on Growth |
| Integrations | About 50 to 60, plus Zapier | 80+ claimed, plus Zapier |
| Support | 24/7 by phone, email and chat | Business hours, help desk after hours |
| Security | SOC 2 Type II, ISO 27001, GDPR (vendor-stated) | “Financial institution-level” security (vendor-stated) |
Integration counts and support hours are vendor-stated. Check that your ESP or CRM is on each list.

| Your situation | Better fit | Why |
|---|---|---|
| Cleaning an old list once or twice a year | NeverBounce | Lowest price per credit; use credits within 12 months |
| B2B list with many company domains | ZeroBounce | AI scoring helps decide which catch-all addresses to send |
| Validating signups every day | ZeroBounce ONE | Monthly allowance, credits kept while subscribed, 24/7 support |
| Small team, under 10,000 checks a month | NeverBounce Growth | $49 a month |
| Credits that never expire on any plan | Consider an alternative | See the next section |
Gamalogic is an email validation API and bulk verifier. Gamalogic is worth testing alongside ZeroBounce and NeverBounce if neither pricing model fits (see pricing).
Gamalogic charges $5 to $7 per 1,000 credits. 10,000 checks cost $50 to $70 on Gamalogic, compared with $129 on ZeroBounce and $80 on NeverBounce pay-as-you-go.
Gamalogic credits never expire, with or without a subscription. The same credits cover real-time checks, bulk lists and email finding.
Gamalogic runs dedicated catch-all validation instead of only labelling catch-all addresses. Gamalogic also checks addresses behind secure email gateways and on servers that use SMTP tarpitting. These cases cause most “unknown” results on B2B lists.
Gamalogic gives 500 free credits on signup, with no card. 500 credits are enough to run the one-hour test above, compared with ZeroBounce’s 100 free credits a month.
Run the one-hour test with Gamalogic as a third tool, then validate your list free.
ZeroBounce is better for teams that validate every month and need catch-all scoring and 24/7 support. NeverBounce is better for occasional bulk cleaning at a lower price per credit.
NeverBounce is cheaper at most volumes. NeverBounce costs $8 per 1,000 credits and $400 for 100,000, while ZeroBounce pay-as-you-go costs $129 for 10,000 and $649 for 100,000.
NeverBounce credits expire 12 months after purchase. ZeroBounce credits do not expire while you have an active ZeroBounce ONE subscription.
ZeroBounce gives 100 free credits every month. NeverBounce offers a free start with test credits and no card.
ZeroBounce is better for catch-all addresses, because it offers an AI scoring tool for catch-all results. NeverBounce labels them “accept-all” without a score.
NeverBounce is operated by ZoomInfo.
Gamalogic is an alternative with 500 free credits, $5 to $7 per 1,000 credits and credits that never expire. Gamalogic includes catch-all, secure email gateway and SMTP tarpitting checks.
Gamalogic gives you 500 free credits with no card, enough to run the one-hour test above, and your credits never expire. Get 500 free credits
Compare 5 DeBounce alternatives for small lists: free credits, smallest packs, credit expiry and catch-all billing, checked against vendor pages.
Learn how cart recovery email validation improves abandoned cart recovery, ecommerce email deliverability, bounce reduction, and customer retention. Discover how clean email lists help ecommerce brands recover more lost sales and optimize recovery campaigns.
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