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HubVibe Email Verification
x402
HubVibe Email Verification is a paid API for AI agents from hubvibe-io.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-01).
Performs live email address verification by checking syntax, DNS records, and the actual mail server to determine if the address is deliverable, with flags for disposable domains, role accounts, catch-all servers, and typos.
Price / call$0.02
Success—
StatusUnknown
How this service works
Email verification / email validation: will mail to this address arrive? Checked live at the source: syntax, the domain's DNS (MX, null MX, no such domain) and its own mail server, asked whether the mailbox exists and whether it accepts any address (catch-all). No message sent. Flags disposable domains, role accounts (info@), free providers and typos (gmial.com). Verdict: deliverable, undeliverable, risky or unknown, with the reason. Input: email.
Output
Returns a deliverability verdict (deliverable, undeliverable, risky, or unknown) with a specific reason code, plus boolean flags indicating whether the address is on a disposable domain, is a role account (e.g. info@, admin@), belongs to a free email provider, appears to be a typo variant of a known domain, and whether the server is a catch-all. No message is sent to the address during verification.
Example use cases
Signup form fraud screening
“Before I create an account for the user who entered temp-mail123@throwam.com, check if that email is disposable or fake so I can block it if needed.”
Pre-campaign list cleaning
“I'm about to email info@acmecorp.io — can you check live whether that address is actually deliverable, or if it's a role account or catch-all that might tank my sender reputation?”
Typo correction at checkout
“A customer just entered their email as sarah@gmial.com during checkout — can you verify it and tell me if that looks like a typo for gmail.com and whether it's deliverable?”
Technical details
Endpoint
POSThttps://hubvibe-io.com/work/email/verify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a real-time, live check against the actual mail server rather than a static list lookup. It is ideal for pre-send validation, signup screening, and CRM hygiene where deliverability confidence matters. Prefer it over syntax-only validators when you need to catch disposable domains, role accounts, catch-alls, and typo domains in one call without sending an actual message.
Side effects
- Malformed email input returns a validation error before any network checks are made
- Domains with no DNS records return undeliverable with a no-such-domain reason
- Mail servers that time out or refuse SMTP probing return unknown verdict
- Some mail servers are catch-all and cannot confirm individual mailbox existence, returning risky or unknown
- Temporary network issues with remote mail servers may yield unknown instead of definitive verdict
- Very strict mail servers that block all SMTP probes will result in unknown verdict
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string | ||
| language | string |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"mx": [],
"email": "support@github.com",
"notes": [],
"domain": "github.com",
"reason": "mailbox_exists",
"mailbox": {
"exists": true,
"checked": true,
"mx_host": "aspmx.l.google.com",
"catch_all": false,
"smtp_code": 250,
"smtp_message": "2.1.5 OK"
},
"verdict": "deliverable",
"checked_at": "2026-09-26T18:00:00Z",
"disposable": false,
"local_part": "support",
"normalized": "support@github.com",
"accepts_mail": true,
"did_you_mean": "jane@gmail.com",
"domain_ascii": "github.com",
"role_account": true,
"syntax_valid": true,
"domain_exists": true,
"free_provider": false,
"mail_provider": "google",
"disposable_list_as_of": "2026-09-28"
},
"status": "ok",
"worker": "email.verify",
"price_usd": 0.02,
"provenance": {
"steps": [
{
"ms": 312,
"ok": true,
"step": "quote",
"reason": "provider_timeout",
"provider": "coinbase-advanced-trade-public"
}
],
"attempts": 1,
"elapsed_ms": 340,
"providers_used": [
"coinbase-advanced-trade-public"
]
},
"receipt_id": "rcpt_9f1c2b3a4d5e6f70",
"attribution": [
{
"url": "https://translate.google.com",
"text": "Translated by Google"
}
],
"receipt_url": "/work/receipts/rcpt_9f1c2b3a4d5e6f70"
}
}Tags
x402
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