From a company domain or work email, names its email provider (Microsoft 365, Go
From a company domain or work email, names its email provider (Microsoft 365, Google Workspace), security gateway, MS tenant, DMARC, sending tools, SSO and the SaaS it verified (Atlassian, Okta, Zoom, OpenAI...) - all from public DNS. Up to 3 items per call; failed lookups are not charged.
Not tested: has real-world effectsour last check, 2026-10-24
0 of 0checks answered this week
n/amedian answer time
$0.01listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://agent-data.centorprat.workers.dev/tools/saas-stack-email-provider-detector
| Category | Company and compliance |
|---|---|
| Provider host | agent-data.centorprat.workers.dev |
| Networks | eip155:137, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"body": {
"domains": [
"stripe.com"
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"domains": {
"description": "Company domains or websites, e.g. [\"stripe.com\", \"atlassian.com\"].",
"items": {
"type": "string"
},
"maxItems": 3,
"type": "array"
},
"emailProvider": {
"description": "microsoft = Microsoft 365 (incl. via GoDaddy), google = Google Workspace, other = neither, any = no filter.",
"enum": [
"any",
"microsoft",
"google",
"other"
],
"type": "string"
},
"emails": {
"description": "Lead or contact emails, e.g. [\"jane@acme.com\"]. The company domain is taken from each address; free-mail addresses (gmail.com, outlook.com, yahoo.com...) are skipped for free.",
"items": {
"type": "string"
},
"maxItems": 3,
"type": "array"
},
"excludeVendors": {
"description": "e.g. your own product, to keep only prospects.",
"items": {
"type": "string"
},
"maxItems": 3,
"type": "array"
},
"includeSubdomains": {
"description": "Return each vendor-hosted subdomain with its CNAME (help, status, careers, go, login, www...). Turn off for smaller rows.",
"type": "boolean"
},
"requireVendors": {
"description": "e.g. [\"Okta\"], [\"Proofpoint\", \"Mimecast\"], [\"HubSpot\"], [\"Greenhouse\"]. Case-insensitive.",
"items": {
"type": "string"
},
"maxItems": 3,
"type": "array"
}
},
"required": []
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}