Menu
Email verification benchmarks
Across 2,715 email addresses and five providers, valid classifications range from 333 to 603—about 80% more at the high end.
AgentsVerify goes beyond catch-all and secure email gateway (SEG) detection to identify deliverable addresses, without sending an email.
For GTM engineers and cold outreach specialists preparing lists, what matters is price per usable lead: verification cost balanced against recovered contacts and bounce risk.
What each provider returns
ZeroBounce
BounceBan
MillionVerifier
Hunter| Result | AgentsVerify | ZeroBounce | BounceBan | MillionVerifier | Hunter |
|---|---|---|---|---|---|
| Valid | 600 | 603 | 564 | 340 | 333 |
| Invalid | 1,994 | 1,912 | 2,040 | 1,452 | 1,445 |
| Catch-all | 108 | 89 | 110 | 749 | 811 |
| Unknown | 13 | 111 | 1 | 174 | 126 |
The price of scale
One-time credits · USD before tax
One-time price · USD
| Credits | AgentsVerify | ZeroBounce | BounceBan | MillionVerifier | Hunter |
|---|---|---|---|---|---|
| $11.70 | $129 | $40 | $39 | $110 | |
| $17.70 | $274 | $100 | $59 | $225 | |
| $26.70 | $499 | $175 | $89 | $370 | |
| $44.70 | $649 | $300 | $149 | $740 | |
| $89.70 | $2,199 | $1,000 | $299 | $1,500 | |
| $134.70 | $3,199 | $1,700 | $449 | $2,800 |
Excludes introductory discounts, subscriptions and refunds.
Methodology
About the study
AgentsVerify conducted this study using the same email list and result definitions for every provider. The goal is a fair comparison of practical verification performance, based on measured results rather than brand recognition or past reputation.
All verifications and provider comparisons were fully completed on , ensuring a consistent comparison date across providers.
Bars show percentages; tables show exact counts. Prices compare one-time purchases for the same number of credits.
How providers are compared
Providers use different labels. We group their results into four shared categories:
- Valid
- The address is expected to receive email.
- Invalid
- The address is expected to reject email.
- Catch-all
- The provider leaves address deliverability unresolved on a domain that accepts arbitrary recipients.
- Unknown
- The provider could not determine whether the address can receive email.
AgentsVerify continues beyond catch-all detection with additional address-level checks. Addresses resolved as valid or invalid count in those categories; only unresolved catch-all results remain in the catch-all count.
- ZeroBounce
603 valid = 446 valid results + 157 “do not mail” results counted as valid under its published definitions.
A disposable or role-based label does not automatically mean the address is invalid.
- BounceBan
Deliverable → Valid · Undeliverable → Invalid
“Risky” results are split between catch-all and unknown.
- Hunter
Accept-all → Catch-all