Comparison
ZeroBounce is one of the best-known verifiers, with a broad suite of extra tools and a long list of compliance certifications. VeriDock is a focused verification API that costs far less per check. Here is where each one wins.
ZeroBounce details last checked against their public pages.
250 vs 100
free checks every month
$29 vs $274
to verify 25,000 addresses
Both
skip billing for unknown results
Feature by feature
| VeriDock | ZeroBounce | |
|---|---|---|
| Free tier | 250 checks every month, recurring | 100 credits every month (tied to signing up with a business domain) |
| 5,000 checks | $9 for one month (Starter, $1.80 / 1,000) | $69 one-time ($13.80 / 1,000) |
| 10,000 checks | $21.50 for one month (Starter, $2.15 / 1,000) | $129 one-time ($12.90 / 1,000), or ZeroBounce ONE at $99 / month |
| 25,000 checks | $29 for one month (Growth, $1.16 / 1,000) | $274 one-time ($10.96 / 1,000) |
| 50,000 checks | $66.50 for one month (Growth, $1.33 / 1,000) | $499 one-time ($9.98 / 1,000) |
| Pricing model | Monthly plans with overage | One-time credit packs, or the ZeroBounce ONE subscription |
| Credit expiry | Paid-plan credits roll over for 60 days | Never expire with an active ONE subscription; otherwise expiry rules may apply |
| Unknown results | Never billed | Never billed |
| Duplicate addresses | Free to re-check within 30 days | Not billed |
| Result detail | 4 statuses, a reason code, a 0–100 score and a checks object | 7 statuses (incl. spamtrap, abuse, do_not_mail) with detailed sub-statuses |
| Catch-all, disposable and role detection | Yes | Yes |
| Typo suggestions | Yes | Yes (did_you_mean) |
| Bulk webhooks | Yes, signed and retried for 24 hours | Yes (callback URL on file uploads) |
| Testing without credits | Yes, vd_test_ keys that never use credits | Yes, sandbox test addresses |
| No-code integrations | Zapier, Make and n8n through their HTTP steps | Zapier; Make and n8n not stated |
| Spend caps | Yes, hard spend cap per API key | Not stated |
| Security certifications | None published yet | SOC 2 Type 2, ISO 27001, PCI-DSS, HIPAA (BAA available) |
| Extra products | Verification only | Email finder, AI scoring, inbox placement tests, blacklist and DMARC monitoring, warmup |
ZeroBounce details from their public pages as of October 30, 2026, in their listed currency. “Not stated” means we could not find it published, not that it is missing. ZeroBounce is a trademark of its owner and is not affiliated with VeriDock.
Each row uses the same volume on both sides. VeriDock prices are the cost of one month on the cheapest plan that covers it, including any overage. ZeroBounce prices are one-time packs: you pay once and the credits stay until used, so a one-off clean compares directly, while a recurring volume means buying again. Compare any volume in the calculator.
Where ZeroBounce is stronger
Where VeriDock is stronger
Questions
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250 free checks every month, forever. Upgrade when you outgrow them.