# HubVibe Email Verification

> 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.

## Facts

- Endpoint: POST https://hubvibe-io.com/work/email/verify?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hubvibe-email-verification-7c9d2edc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nnf7vAhK5VFlVmDRScNXP

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability hubvibe-email-verification-7c9d2edc -d '<json body>'
```

Example prompt: Can you verify whether john.doe@gmial.com is a real, deliverable email address — check if the domain exists, if there's a mail server, and if the mailbox actually accepts mail?

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "email": {
   "type": "string",
   "maxLength": 320,
   "minLength": 3
  },
  "language": {
   "type": "string",
   "pattern": "^[A-Za-z]{2,3}(-[A-Za-z0-9]{2,8})*$",
   "maxLength": 35
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hubvibe-email-verification-7c9d2edc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hubvibe-io.com](https://www.zero.xyz/host/hubvibe-io.com/llms.txt)