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MailFerret Domain Email Intelligence
x402
MailFerret Domain Email Intelligence is a paid API for AI agents from mailferret.appin60.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).
Given a company domain, returns verified work email patterns, public emails, mail provider info, DMARC policy, and SMTP acceptance status
Price / call$0.005
Success—
StatusUnknown
How this service works
Email intelligence for a company domain: mail provider (Google Workspace, Microsoft 365, Proofpoint...), catch-all status, SaaS tools revealed by SPF (HubSpot, Salesforce, Zendesk, SendGrid...), DMARC policy, public email addresses found on the company's own website with source URLs, and the likely address pattern. Useful before cold outreach or for tech-stack prospecting.
Output
Returns a JSON object with the company domain, mail acceptance status, email provider (e.g. Google Workspace), catch-all flag, DMARC policy, a list of publicly discovered email addresses with their sources, the likely email pattern (e.g. {first}@company.com), and a list of email-sending services found in the SPF record.
Example use cases
Sales outreach email discovery
“I need to reach someone at hubspot.com — can you find their email format and any publicly listed contact emails so I can put together a cold outreach?”
Email deliverability pre-check
“Before I send a campaign to a list of company domains, can you check whether salesforce.com accepts mail, has a catch-all setup, and what their DMARC policy is?”
Journalist press contact lookup
“I'm trying to pitch a story to the press team at notion.so — can you find any public press or media emails listed for that domain and tell me who their email provider is?”
Technical details
Endpoint
POSThttps://mailferret.appin60.com/domain?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need live, SMTP-verified email intelligence for a company domain rather than static database lookups. It is ideal for B2B sales prospecting, press outreach, or deliverability research where you need the actual email format pattern, provider identity, and real-time mail server acceptance status. Prefer this over generic contact finders when you need structured metadata like DMARC policy and SPF sender list alongside the email data, and when pay-per-verified-result pricing is preferable to subscription models.
Side effects
- Domain not found or does not exist — status field indicates failure
- Domain accepts no mail (accepts_mail: false) — pattern and emails may be null
- SMTP check timeout due to server-side rate limiting or blocking
- Invalid domain format input (minLength 3 not met) — validation error
- Catch-all domain makes individual address verification unreliable
- No public emails found — public_emails returns empty array
- DMARC record absent — dmarc_policy returns null or none
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "zapier.com",
"status": "ok",
"provider": "google_workspace",
"catch_all": true,
"accepts_mail": true,
"dmarc_policy": "reject",
"public_emails": [
{
"role": true,
"email": "press@zapier.com",
"source": "https://zapier.com/press"
}
],
"likely_pattern": null,
"email_senders_from_spf": [
"Google Workspace",
"Mailgun",
"HubSpot",
"Zendesk",
"Qualtrics"
]
}
}Tags
x402
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