What actually changes when migrating to Mailbeam from another verifier?

Three things: the endpoint URL, the authentication scheme, and the names of the fields in the response. The shape of the integration does not change — you still send an address and branch on what comes back, so the call site usually stays where it is.

Do I have to migrate everything at once?

No. Verification is a per-call decision, so a provider can be swapped one code path at a time — typically signup first, then list cleaning — and both providers can run side by side while results are compared.

How do other providers' statuses map onto Mailbeam's?

Each migration guide contains the field-by-field mapping for that provider, including how its verdicts line up with Mailbeam's status and score. Catch-all domains are the value worth checking first, because providers disagree most on how to report them.

Which providers have a Mailbeam migration guide?

ZeroBounce, Hunter, Bouncer, NeverBounce, MillionVerifier, Kickbox and Snov.io each have a guide covering endpoint mapping, response-field equivalents and code examples.

Migration Guides

Switching from another email verification provider? Each guide maps your current endpoints and response fields to the Mailbeam API, with drop-in code examples so you can migrate without rewriting your integration.

Migrating an email verification provider changes three things and nothing else: the endpoint URL, the authentication scheme, and the names of the fields you read off the response. The call site stays where it is, so a provider can be swapped one code path at a time — and both can run side by side while you compare results.

Guides available: 7 providers
New endpoint: POST https://api.mailbeam.dev/v1/verify
New auth: Authorization: Bearer mb_live_…
Check first: How catch-all verdicts map across

From ZeroBounce
Endpoint and field mapping from ZeroBounce to Mailbeam.
From Hunter
Endpoint and field mapping from Hunter to Mailbeam.
From Bouncer
Endpoint and field mapping from Bouncer to Mailbeam.
From NeverBounce
Endpoint and field mapping from NeverBounce to Mailbeam.
From MillionVerifier
Endpoint and field mapping from MillionVerifier to Mailbeam.
From Kickbox
Endpoint and field mapping from Kickbox to Mailbeam.
From Snov.io
Endpoint and field mapping from Snov.io to Mailbeam.
From Clearout
Endpoint and field mapping from Clearout to Mailbeam.
From Emailable
Endpoint and field mapping from Emailable to Mailbeam.

New to the API?

Start with the quickstart to make your first verification, then browse the full endpoint reference.

Quickstart API Reference

Frequently asked questions

Answers checked against the API contract on 2026-08-10.