MillionVerifier vs ZeroBounce
 MillionVerifier |  ZeroBounce | |
|---|---|---|
| Sentiment | ||
| Score | 27/100 | 27/100 |
| Rank in category | #4 | #3 |
| Rated comments | 10 | 10 |
| Best for | Cheap bulk cleaning of cold-email lists before sending; Small senders who want pay-as-you-go verification | Marketers who want an established verifier and can absorb a higher per-email price; Routine cleaning of opt-in or older marketing lists |
| Skip it if | Lists heavy in catch-all domains; Teams that want one verifier pass to be the final check before sending | Early-stage teams on a tight verification budget; B2B lists heavy in startup or catch-all domains |
| Starting price | $39 | $39 |
| Pricing (vendor-stated) | Pay-as-you-go credits with no contracts, from $39 (smallest pack size not stated on the page); 50,000 verifications for $89 and 1 million for $449. Credits never expire; 100 free credits with no card required; refunds for emails it can't verify with certainty. | Free plan with 100 validation credits a month (business-domain signup). Pay-as-you-go from $39 for 2,000 credits. ZeroBounce ONE subscription from $99/mo for 10,000 credits, 20% off billed annually; over 1M credits is sales-led. |
MillionVerifier shows up constantly as the default list cleaner in cold-email stack advice, but only about ten of the 100 comments give a first-hand opinion, and roughly a third are promotional, mostly answers that name it on the way to plugging a data provider or another verifier. Independent users agree it is cheap and good enough for routine bulk cleaning. Critics say it handles catch-all domains poorly and that some addresses it passes still bounce, which is why several users run a second verifier after it.
Users like
- Cheap per verification: users call it very affordable, cheap enough for a few thousand emails a month, and the best value they have found against pricier verifiers[1][2][3][4]
- Results hold up for routine list cleaning: users describe them as solid and fast, say it catches most role addresses, and one regular user says it works great[1][2][3][4]
Users complain about
- Weak on catch-all domains: one team that ran repeated campaigns found it marks some catch-alls as valid even though they turn out undeliverable[1]
- Some addresses it passes still bounce: a regular user found verified contacts hard-bouncing, and another says bounces dropped sharply after moving to a different verifier[1][2]
Independent users who report on ZeroBounce mostly describe it as an accurate, established verifier for list cleaning, but price is the recurring complaint and its accuracy is disputed on B2B lists, where one user says conservative risk scoring bins valid addresses. About two-thirds of the 49 Reddit mentions are promotional, including a one-day burst of near-identical posts pitching FilterBounce, DoYouMail and Mystrika as ZeroBounce replacements, repeated plugs for one cheaper verifier, and seeded Prospeo switching stories, so this rests on about ten independent opinions, most of them brief.
Users like
Users complain about
- Expensive: users call it pricey, and an early-stage team says the API pricing became too heavy[1][2]
- Accuracy is contested on B2B data: one team left over low accuracy, and another says its conservative risk scoring pushes good startup addresses into the risky bucket[1][2]
- Cleaned lists still produced bounces for users verifying Apollo leads[1][2]
- A customer verifying a large HubSpot database says support treated them like a nuisance and is looking to replace it[1]