ZeroBounce vs MillionVerifier
Both are well-known email verifiers. Here’s how ZeroBounce and MillionVerifier stack up on accuracy, pricing and features — and where a bundled tool like BounceBlock changes the math.
| ZeroBounce | MillionVerifier | BounceBlock | |
|---|---|---|---|
| Accuracy (claimed) | Markets 99%+ (99.6% in its own tests) | High | Deep SMTP + true catch-all resolution |
| Pricing model | Credit-based (credits + monthly subscriptions) | Credit-based | Flat monthly |
| Free tier | 100 verifications / month | 10,000 free verifications (the most generous) | 100 rows / month |
| Credits expire? | No | No | No credits — flat allowance |
| Phone validation | — | — | ● |
| Company data | — | — | ● |
Based on public pricing/marketing pages (June 2026); details change — verify current specifics on each vendor’s site.
The honest breakdown
ZeroBounce
Markets 99%+ (99.6% in its own tests)
The deepest deliverability suite — AI catch-all score (0–10), Activity Data, DMARC and blacklist monitors, inbox-placement tests.
MillionVerifier
High
Huge throughput (1M emails in ~6 hours) and the most generous free tier in the category.
The verdict
Choose ZeroBounce if deliverability teams that want every monitoring extra in one place and don't mind credit math.
Choose MillionVerifier if anyone cleaning very large lists who wants cheap scale and a big free trial.
Consider BounceBlock if you’d rather verify email and phone and company in one upload, at a flat monthly price, and never get charged for an “unknown” result. Neither tool here validates phone numbers — BounceBlock does.
Frequently asked
Is ZeroBounce or MillionVerifier more accurate?
ZeroBounce markets 99%+ (99.6% in its own tests), while MillionVerifier high. Marketed accuracy numbers are rarely independently audited, so weigh them alongside catch-all handling and how each tool treats 'unknown' results.
Which is cheaper, ZeroBounce or MillionVerifier?
ZeroBounce is credit-based (credits + monthly subscriptions) (~$0.01 / email (2,000 minimum)); MillionVerifier is credit-based (~$0.0037 / email). For irregular volumes, credit-metered pricing is harder to predict than a flat plan.
Do ZeroBounce or MillionVerifier validate phone numbers?
ZeroBounce is email-only. MillionVerifier is email-only. BounceBlock validates email and phone (line type, carrier, status) in the same upload.
What's a good alternative to both?
If you want email, phone and company verification in one flat-priced pass, BounceBlock covers all three — and you only get charged a flat allowance, never per unknown.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.