Verify zoho.com addresses

How Kavik verifies Zoho Mail addresses: Zoho-specific SMTP response classes, with free and hosted tiers handled distinctly.

Zoho Mail hosts both free consumer mailboxes and a large number of business domains. Its SMTP answers have provider-specific shapes that generic classifiers flatten into noise.

How Kavik verifies Zoho

  • Zoho-specific response classes: acceptance, user-unknown and throttling replies are classified per Zoho’s actual behavior, not generic heuristics.
  • Hosted business domains on Zoho infrastructure are detected from MX, so the same rules apply when zoho.com is not visible in the address.
  • Catch-all Zoho tenants are measured and capped at risky.

What the verdicts mean here

  • Valid: Zoho accepted the mailbox under its real rules.
  • Risky: catch-all tenant or ambiguous reply.
  • Invalid: Zoho’s user-unknown reply for this mailbox.
  • Unknown: throttled this time; never billed.
curl "https://api.kavik.email/api/v1/verify?email=jane@zoho.com" \
  -H "X-API-Key: eva_your_key"

See single verification for the full response shape.