A little less busywork.
A little more clarity.
Let your lists make sense.
Google Workspace
MX records matchedFind the providers behind your addresses.
Bring everything into focus.
Find the email providers behind your addresses, from global platforms to regional services.
Separate provider groups, duplicates and format issues with filters that make sense.
Know what’s confirmed, what’s inferred and what still needs a closer look.
CSV, TXT, or a simple paste.
Import an email listSimple tools for the details that matter.
September contacts
Customer directory
Newsletter audience
contacts.csv
subscribers.txt
Saved. Ready when you are.Keep imports and results together in a private workspace. Pick up exactly where you left off.
Turn addresses into useful provider groups, with live DNS evidence behind each result.
Domaingmail.comPersonal
ProviderMicrosoft 365Business
Your categories, in your preferred order.Create ordered rules for individual addresses, domains and providers. Your workflow, your way.
Export exactly what you need, with original CSV columns preserved and groups ready to use.
Global platforms. Regional providers. Custom business domains.
Provider detection, not mailbox integrations. Coverage is not universal.
Unknown providers and hidden hosts stay clearly labeled.
Group providers and flag duplicates before your next workflow.
Inspect receiving services, gateways and confidence in one place.
Save your rules and export the groups that matter to you.
One free workspace. Clear limits. No credit card.
One import at a time.
A little order, on us.
Space for your everyday workflow.
Zetta accepts international email lists and combines a maintained catalog with live DNS evidence. No complete worldwide provider directory exists. Unknown providers and hidden mailbox hosts are clearly marked instead of guessed.
No. Zetta checks address format and domain routing. It does not send email to uploaded addresses or guarantee that an individual mailbox exists or can receive mail.
Coverage includes Spectrum / Charter and regional Roadrunner domains, Yahoo regional aliases and Yahoo Japan, Canadian providers such as Bell, Rogers and TELUS, European services such as Orange, GMX and BT, and Australian providers such as Telstra and OptusNet. These are examples, not a claim of complete coverage.
No mailbox connection is needed. Create and verify your Zetta account, then upload a CSV or TXT file or paste your list. The workspace sorts the addresses you provide.