Free Zoho Mail & Workplace Email Verifier
Verify @zohomail.com, @zoho.com, @zohomail.eu, @zohomail.in, and custom corporate domains hosted on Zoho Workplace in real time.
⚙️ Zoho Email Verifier Telemetry Specs
Zoho Mail Live SMTP Handshake & MX Diagnostic
Supported domains: @zohomail.com, @zoho.com, @zohomail.eu, @zohomail.in & Custom B2B Zoho Domains
| SMTP Code / Response | KaijuVerifier Verdict | Technical Meaning |
|---|---|---|
| 250 2.1.5 <user> Recipient ok | Valid Zoho Mailbox | The Zoho Mail or Zoho Workplace user account exists and accepts incoming messages. |
| 550 5.1.1 <user> User unknown | Invalid Recipient | The mailbox does not exist inside the Zoho Workplace organization or consumer directory. |
| 550 5.2.1 <user> Mailbox disabled | Suspended Account | The employee account has been deactivated by the Zoho Workplace administrator. |
| 451 4.7.1 Greylisted, please try again later | Zoho Anti-Spam Greylisting | Zoho temporarily defers unfamiliar senders; KaijuVerifier automatically completes the retry handshake at $0 cost if unresolved. |
How We Verify Zoho Mail & Zoho Workplace Addresses
US (mx.zoho.com), EU (mx.zoho.eu) & India (mx.zoho.in) Gateways
Zoho operates isolated regional MX clusters for GDPR and data residency compliance (`mx.zoho.com`, `mx.zoho.eu`, `mx.zoho.in`, `mx.zoho.com.au`). KaijuVerifier automatically fingerprints the regional Zoho cluster and probes with matching TLS parameters.
Detecting Zoho Workplace Catch-All Rules
Over 15 million SMBs and startups use Zoho Workplace for custom domain email, and many enable a catch-all inbox (`info@` or `admin@`). Our dual-probe canary test detects Zoho catch-all routing in under 250ms.
Smart Retry for Zoho 451 4.7.1 Deferrals
Zoho's inbound anti-spam gateway frequently issues a temporary 451 greylisting response on the first probe. KaijuVerifier handles the retry transparently and never bills credits for unresolved Unknowns.
Verify Other Email Providers & Regional ISPs
Frequently Asked Questions — Zoho Mail Verification
How can I tell if a company uses Zoho Mail for its business email?
When you verify any corporate email address on KaijuVerifier, our MX fingerprinting engine checks whether the domain points to `mx.zoho.com`, `mx.zoho.eu`, or `mx.zoho.in` and displays Zoho Mail as the email service provider.
Can KaijuVerifier verify @zohomail.com and @zoho.com addresses without sending an email?
Yes. We perform a non-intrusive SMTP RCPT TO handshake directly with Zoho's inbound MX servers. Zoho responds with 250 2.1.5 if the mailbox is active or 550 5.1.1 if the user does not exist.
Does KaijuVerifier charge credits if Zoho greylists a domain?
No. Under our $0 Unknowns guarantee, you are only billed when we return a definitive Valid or Invalid verdict.