Email API
Technology Lookup
Discover the technology stack behind any website — frameworks, analytics, hosting, and more.
POST
$0.02/call/v1/email/technologyUsage
const res = await fetch('https://api.yepapi.com/v1/email/technology', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({ domain: 'stripe.com' }),
});
const { data } = await res.json();
console.log(data);curl -X POST https://api.yepapi.com/v1/email/technology \
-H "x-api-key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"domain": "stripe.com"}'Request Body
| Parameter | Type | Required | Description | Default |
|---|---|---|---|---|
domain | string | Yes | Domain to detect technologies for (e.g., stripe.com) | — |
Response
{
"data": {
"domain": "stripe.com",
"technologies": [
{
"category": null,
"name": "Contentful",
"slug": "contentful",
"website": "contentful.com"
},
{
"category": null,
"name": "Java",
"slug": "java",
"website": "java.com"
},
{
"category": null,
"name": "dc.js",
"slug": "dc-js",
"website": "dc-js.github.io"
},
{
"category": null,
"name": "hCaptcha",
"slug": "hcaptcha",
"website": "hcaptcha.com"
},
{
"category": null,
"name": "Google Analytics",
"slug": "google-analytics",
"website": "google.com"
},
{
"category": null,
"name": "Klarna Checkout",
"slug": "klarna-checkout",
"website": "klarna.com"
},
{
"category": null,
"name": "Stripe",
"slug": "stripe",
"website": "stripe.com"
},
{
"category": null,
"name": "Nginx",
"slug": "nginx",
"website": "nginx.org"
},
{
"category": null,
"name": "Bootstrap",
"slug": "bootstrap",
"website": "getbootstrap.com"
},
{
"category": null,
"name": "Stimulus",
"slug": "stimulus",
"website": "stimulusjs.org"
},
{
"category": null,
"name": "C3.js",
"slug": "c3-js",
"website": "c3js.org"
},
{
"category": null,
"name": "jQuery",
"slug": "jquery",
"website": "jquery.com"
},
{
"category": null,
"name": "Amazon Web Services",
"slug": "amazon-web-services",
"website": "aws.amazon.com"
},
{
"category": null,
"name": "SAP Commerce Cloud",
"slug": "sap-commerce-cloud",
"website": "sap.com"
},
{
"category": null,
"name": "HSTS",
"slug": "hsts",
"website": "rfc-editor.org"
},
{
"category": null,
"name": "Linkedin Ads",
"slug": "linkedin-ads",
"website": "business.linkedin.com"
},
{
"category": null,
"name": "React",
"slug": "react",
"website": "reactjs.org"
},
{
"category": null,
"name": "AMP",
"slug": "amp",
"website": "amp.dev"
},
{
"category": null,
"name": "Algolia",
"slug": "algolia",
"website": "algolia.com"
},
{
"category": null,
"name": "Amazon S3",
"slug": "amazon-s3",
"website": "aws.amazon.com"
}
]
},
"ok": true
}Response Fields
| Field | Type | Description |
|---|---|---|
ok | boolean | Whether the request succeeded |
data.domain | string | The domain that was analyzed |
data.technologies | object[] | Technologies detected on the website |
data.technologies[].name | string | Display name of the technology |
data.technologies[].slug | string | URL-safe identifier for the technology |
data.technologies[].category | string | null | Technology category, when available |
data.technologies[].website | string | Official website of the technology |
Under the Hood
Useful for technographic targeting — filter prospect lists by the tools a company already uses (e.g., everyone running a particular CMS or analytics stack).