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MailFerret Work Email Finder & Verifier
x402
MailFerret Work Email Finder & Verifier is a paid API for AI agents from mailferret.appin60.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Finds and verifies a person's work email address using live SMTP checks, returning a confirmed deliverable address or rejection, charged only on success.
Price / call$0.01
Success—
StatusUnknown
How this service works
Find a person's verified work email from first name, last name and company domain. Live SMTP check against the company's mail server, catch-all detection. Charged only when a mailbox is verified; misses return 4xx and are not charged.
Output
Returns a JSON object containing the verified email address, domain, SMTP verification status ('found' or not), a list of candidate emails checked with individual results ('accepted'/'rejected'), the email provider (e.g. google_workspace), MX records, whether the domain is catch-all, a confidence level ('high'/'medium'/'low'), and the verification method used (e.g. smtp_rcpt).
Example use cases
Sales lead email enrichment
“I have a lead — Jane Smith, works at stripe.com — can you find and verify her work email so I can add it to my CRM before reaching out?”
Journalist contact lookup
“I need to reach out to Alex Johnson who works at nytimes.com. Can you find his verified work email address?”
Recruiting outreach contact
“I want to contact Maria Garcia, an engineer at openai.com — can you find her verified work email so I can send a recruiting message?”
Technical details
Endpoint
POSThttps://mailferret.appin60.com/find?utm_source=zero.xyzWhen to prefer
Choose MailFerret when you need a pay-per-success, no-API-key solution for finding and SMTP-verifying individual work emails in real time. It is ideal for agents doing cold outreach enrichment, CRM population, or recruiting contact discovery where you only want to pay when a verified address is actually returned. Prefer it over bulk email list services when operating on individual leads and requiring live deliverability confirmation rather than pattern guessing.
Side effects
- Email not found: no accepted email candidate discovered for the given name and domain
- Domain catch-all: domain accepts all addresses, making SMTP verification unreliable
- Invalid domain: domain does not exist or has no MX records
- SMTP timeout: mail server unresponsive during live check
- Payment failure: x402 USDC payment not completed, no charge and no result returned
- Insufficient input: first name or domain missing causes request rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"mx": [
"aspmx.l.google.com"
],
"email": "peer@cal.com",
"domain": "cal.com",
"status": "found",
"checked": [
{
"email": "peer.richelsen@cal.com",
"result": "rejected"
},
{
"email": "peer@cal.com",
"result": "accepted"
}
],
"provider": "google_workspace",
"catch_all": false,
"confidence": "high",
"verified_by": "smtp_rcpt"
}
}Tags
x402
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