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.