Compare · Qualisend vs ZeroBounce
Qualisend vs ZeroBounce.
Both verify email addresses down to a real SMTP conversation. ZeroBounce fits teams that want a broad suite of adjacent tools from one vendor. Qualisend fits teams that want focused verification with transparent, evidence-backed verdicts and lower entry pricing. Everything below is sourced and dated - where we haven't verified a ZeroBounce capability, we say so instead of guessing.
Choose Qualisend if
You want verification, done properly, and nothing else - per-address evidence (MX, provider, SMTP reason), honest catch-all verdicts, EU processing, and pricing that starts at $6 per 1,000 instead of a $39 minimum.
Choose ZeroBounce if
You want one vendor for a wider toolkit (activity scoring, deliverability and blacklist testing, inbox placement) and you're comfortable paying suite prices for verification as one part of it.
Side by side
Eight criteria buyers actually decide on - not every feature either product has. ZeroBounce facts come from their public pricing and docs, captured 2026-07; recheck before relying on them.
| Criterion | Qualisend | ZeroBounce |
|---|---|---|
| Entry price | $6 / 1,000 pay-as-you-go, no minimum plan | $39 / 2,000 (~$0.02 per address)source: zerobounce.net/pricing · 2026-07 |
| Free tier | 100 credits, never expire | 100 credits per monthsource: pricing page · 2026-07 |
| Catch-all handling | Reported as catch-all, with the SMTP evidence shown - never rounded up to "valid" | Catch-all status returned; scoring add-on offered to estimate deliverabilitysource: docs · 2026-07 |
| Per-address evidence | MX record, inferred provider, SMTP reason code on every result | Sub-statuses returned via API; depth varies by result typesource: API docs · 2026-07 |
| Bulk cleaning | CSV or paste up to 1M addresses, live progress, duplicates charged once | CSV upload and downloadsource: product pages · 2026-07 |
| Developer API | REST, scoped keys, per-key rate limits | REST API v2, mature and widely integratedsource: API docs · 2026-07 |
| Adjacent tools | None - verification only, by design | Activity scoring, deliverability tests, blacklist monitoring, inbox placementsource: product pages · 2026-07 |
| EU data processing | All processing on EU infrastructure (Ireland) | EU regional endpoint optionsource: docs · 2026-07 |
Pricing at real volumes
One example bracket each. Both providers get cheaper at volume - the difference is at the entry point and in the subscription model.
Qualisend
$6
per 1,000 verifications, pay-as-you-go
- Credits never expire
- Pro subscription: any volume 1k-1M at 20% below pay-as-you-go
- Duplicates in a list charged once
ZeroBounce
$39
for 2,000 credits (~$0.02 each) · captured 2026-07
- Monthly free tier of 100 credits
- Volume discounts at higher brackets
- AI scoring priced as an add-on
The real difference: what a verdict means
Feature tables hide the philosophical gap. These two are why teams switch to us.
We don't round catch-all up
When a domain accepts every address, no vendor can truly confirm the mailbox - so we say exactly that, show the probe evidence, and let you decide your risk tolerance. Verdicts that quietly upgrade "unverifiable" to "valid" look better in a demo and cost you bounces in production.
Every result shows its work
Each address carries its MX record, inferred provider, and the raw SMTP reason. When a result surprises you, you can see why instead of trusting a black box - which also means you can defend the clean to a client or a deliverability auditor.
Common questions
Other comparisons
Run the same list through both.
100 free credits, no card. Verify a sample in Qualisend, compare the verdicts and the evidence against what ZeroBounce told you, and keep whichever you trust more.