Find the email. Verify it delivers.
ZeMail finds anyone's email from their name and company domain — then confirms whether any address is real, risky, or dead, resolving the catch-all domains other tools quietly mark "unknown". One API, any language, sub-second.
Free sandbox demo — try catchall@acme.io or bounce@x.com.
Find the right address — and prove it delivers.
Building a list from scratch or cleaning one you already have, ZeMail does both jobs on the same accuracy-first engine — and you never pay for an answer we can't determine.
Email Verification
Check one address or a whole list and know instantly if each is valid, risky, or dead — with catch-all resolution the others skip. Real-time or bulk. 1 credit per result; unknowns free.
How it works →Email Finder
Give a name and a company domain — get their most likely deliverable address, SMTP-verified with a confidence score. One lookup, in bulk, or via API. 1 credit only when found.
See the API →Watch an email run the engine.
Every address flows through a layered pipeline — cheapest checks first, escalating only when needed. Here's a real verification, stage by stage.
We don't give up at "unknown".
Roughly 30–40% of business domains are catch-all — they say yes to every address, so a basic SMTP probe can't tell a real mailbox from a fake one. Most verifiers shrug and return "unknown", then charge you anyway.
ZeMail resolves a real verdict using its domain-pattern and corroboration intelligence — a data layer that gets sharper with every verification. And if we truly can't tell, the result is "unknown" and it's free.
→ unknown · charged
→ catch-all · score 78
Upload a list. Watch it clean itself.
Drop in a CSV of any size and ZeMail validates every address — deliverable, risky, invalid, or unknown — with fair scheduling that keeps even million-row lists moving.
- 1 credit per result — you're never charged for "unknown"
- Live progress with downloadable, deduped results
- List-health score & reason-code breakdown
- Deliverable0
- Risky0
- Invalid0
- Unknown0
Everything you need to protect your sender reputation.
Catch-all resolution
The IP moat. Resolve a real score where everyone else returns "unknown".
Real-time & bulk
Sub-second single checks or millions in a CSV — one consistent API.
Developer-first
Clean REST + webhooks, copy-paste snippets in 8 languages, idempotent calls.
Fair multi-tenant scheduling
Big lists never starve small ones — sharded, interleaved, always moving.
Private by design
We learn domain-level shapes, never store your contacts' addresses. GDPR & CCPA compliant.
You only pay for answers
Every determinate result is 1 credit — valid, invalid, catch-all, or risky. "Unknown" results, where we can't be sure, are always free.
Teams that stopped guessing.
From high-volume senders to lean growth teams — here's what changes after the "unknowns" disappear.
"We cut our bounce rate from 9% to under 1% in a single week. The catch-all resolution alone paid for the plan ten times over."
"Other tools left half our list as 'unknown' and still billed us. ZeMail resolves them — and the ones it can't are free. No-brainer."
"We push 2M+ emails a month through the API. Sub-second responses, dead-simple integration, not one slowdown at peak."
"Switched from three tools down to one. Cleaner data, half the spend, and a team that finally trusts the list."
"Our inbox placement jumped 14 points after a single cleaning pass. Deliverability has never looked this healthy."
"The list-health report is the first thing my team checks every morning. Reason codes make cleanup obvious."
"Finally a verifier that's honest about what it can't determine — and doesn't bill you for the guesswork."
"Bulk verification on a 4M-row list finished overnight. No babysitting, no throttling, results in the morning."
"The did-you-mean fixes alone recovered thousands of typo'd signups we'd otherwise have lost forever."
"Dropped it into our signup flow in an afternoon. Webhooks just worked, no surprises in production."
"Support actually understands deliverability — not a script in sight. Genuinely rare for a tool at this price."
"ROI was obvious in the first month — fewer bounces, a better sender score, and way less manual scrubbing."
Why teams switch to datomatic.
Most verifiers give up on the hard 40% of addresses — and bill you for the guesswork. Here's the difference.
| datomatic | Other verifiers | |
|---|---|---|
| Catch-all domain resolution | Real confidence score | Returns "unknown" |
| Charge for undetermined results | Never — always free | Billed anyway |
| Charge for "unknown" results | Never | Usually yes |
| Accuracy incl. catch-all | 99.2% | ~85% |
| Real-time + bulk in one API | Yes | Partial |
| Data privacy | Domain-level only · no PII stored | Your lists stored |
| Money-back guarantee | 99% or credits back | Rarely |
Questions, answered.
How does email verification work?
ZeMail runs a layered check: syntax and typo correction, domain and MX-record lookup, a live SMTP mailbox probe, and catch-all resolution. Each address returns a status, sub-status, and a 0–100 confidence score.
What's a catch-all domain — and why do you handle it better?
A catch-all domain accepts mail to any address, so a normal SMTP probe can't confirm a specific mailbox. Most tools return "unknown". ZeMail resolves a real verdict using domain-pattern and corroboration intelligence that sharpens with every verification.
Will I be charged for results you can't determine?
No. Every determinate result — valid, invalid, catch-all, or risky — costs 1 credit. Only "unknown" results, where we genuinely couldn't determine an answer, are free.
Can I integrate the API in my language?
Yes — it's a clean REST API with copy-paste examples for cURL, Python, Node, PHP, Ruby, Go, Java and C#, plus signed webhooks for batch completion.
How fast is it at scale?
Single-email checks return sub-second on popular domains. Bulk lists use multi-tenant fair scheduling and a warmed sending fleet, so throughput stays steady even when thousands of teams verify at the same time.
Do you guarantee accuracy?
We target 99% accuracy including catch-all domains, and we're transparent when we can't be sure — those results are returned as "unknown" and never billed.
Start verifying in 2 minutes.
Join 4,000+ teams who stopped guessing. Get 2,000 free credits, verify your first list, and watch your bounce rate drop — no card required.
Start free — 2,000 credits