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emailzeno vs MillionVerifier:
which is better for high-volume senders comparing flat-rate tools?

Same flat-rate philosophy — better refund policy, richer API, and EU data residency built in.

Try free — 300 verifications See full comparison

All competitor data sourced from public pricing and documentation pages. ¹ Footnote marks denote claims verified as of 2026-05-11.

TL;DR — winner per dimension

✅ Pricing model
➖ Accuracy claim
➖ Free tier
✅ Integrations
✅ REST API
✅ Refund policy
✅ GDPR / EU hosting
➖ Support SLA

✅ emailzeno wins  ·  ⚠️ MillionVerifier wins  ·  ➖ Tie

Feature-by-feature: emailzeno vs MillionVerifier

Dimension EmailZeno MillionVerifier Winner
Pricing model Flat monthly subscription One-time credit packs + monthly¹ ✅
Accuracy claim 99.6 % (SMTP + MX layer) 99 % stated on site¹ ➖
Free tier 300 verifications, no card 100 free on registration¹ ➖
Integrations 35+ via native + Zapier Limited native, Zapier supported¹ ✅
REST API Full REST + webhooks + bulk REST API, bulk upload¹ ✅
Refund policy Auto-credit on hard bounces Money-back on poor results¹ ✅
GDPR / EU hosting EU-hosted by default (Hetzner DE) EU servers available¹ ✅
Support SLA Email + chat, 24 h SLA Email support, 24 h response¹ ➖

¹ Competitor data verified from public sources as of 2026-05-11. Pricing and features may change — check the competitor's site for the latest.

Pricing side-by-side

EmailZeno
  • Free $0 300 verifications/mo
  • Solo $9 5 000 verifications/mo
  • Growth $29 25 000 verifications/mo
  • Unlimited $39 Unlimited flat rate
  • Scale $79 100 000 verifications/mo
Start free
MillionVerifier
  • Credits pack $14 10 000 credits¹
  • Credits pack $49 50 000 credits¹
  • Credits pack $149 200 000 credits¹
  • Monthly sub $16 10 000/mo¹

¹ As of 2026-05-11. Check their site for latest pricing.

When MillionVerifier is the better pick

MillionVerifier is a solid choice if you prefer one-time credit purchases over a monthly commitment — useful for irregular list hygiene campaigns where you don't want a recurring charge. Their pricing for very large one-off cleans (500 k+ addresses) can undercut a monthly subscription if you only need it once or twice a year. They also have a long track record and well-regarded customer support in deliverability forums.

When emailzeno is the better pick

emailzeno is the better fit for teams that run continuous verification — API integrations feeding sign-up forms, CRM syncs, or nightly list sweeps. Our monthly subscription with native webhook support means results land in your stack automatically. The Unlimited plan removes all per-email anxiety: import at any volume for a flat $39/mo. Our automatic credit refund on confirmed hard bounces is more granular than MillionVerifier's aggregate money-back policy.

Moving from MillionVerifier?

Moving from MillionVerifier? Their CSV export includes a result column (ok / bad / unknown / risky). Map bad rows directly to emailzeno's suppression list import. Our API replaces their endpoint — the request body shape is nearly identical (email field, optional metadata). Contact support and we'll walk you through the one-day migration.

Import your suppression list →

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300 free verifications. No credit card. Cancel any time.

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Frequently asked questions

MillionVerifier's "flat rate" plans are per-quantity brackets that reset if you exceed them; upgrading mid-cycle means purchasing a new pack. emailzeno's Unlimited plan has a literal no-ceiling: verify as many addresses as your worker concurrency allows for $39/mo.

We offer automatic per-address credit refunds when an address returns a confirmed hard bounce post-send — more granular than a bulk money-back. We do not currently offer a free-trial money-back on subscriptions; you can test the Free tier (300 verifications) before upgrading.

Our EU hosting (Hetzner, Frankfurt) is the only option — there's no US data path. MillionVerifier offers EU servers but may default to US depending on account configuration. For strict GDPR Article 44 compliance, our architecture is simpler to document.
Free forever — no credit card

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300 verifications /mo · five-minute API integration · credit refund on hard bounces. Trusted by senders who treat sender reputation like the asset it is.

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