Properties
| Name | Type | Description |
|---|---|---|
| balance | integer | Current remaining email credits after the check or refund attempt. Omitted when API authentication fails. |
| status | boolean | True for a completed check, including an invalid address; false for authentication, credit, or lookup failure. |
| string | Checked address; present on completed checks. | |
| emailformat | boolean | Whether the address has valid syntax; present on completed checks. |
| emailexist | boolean | True for deliverable or catch-all results; present on completed checks. |
| verdict | string | Completed check verdict: deliverable, undeliverable, unknown (catch-all), or invalid_format. |
| reason_code | string | Lookup reason on completed checks or lookup failures; credit_refund_pending means restoration could not complete. Omitted for authentication or insufficient-credit errors. |
| error | string | Human-readable error when status is false. |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://artifacts.apis.io/proweblook-com/json-schema/proweblook-com-email-check-response-schema.json",
"title": "EmailCheckResponse",
"x-generated": "2026-10-31",
"x-method": "derived",
"x-generator": "derive-json-schema.py",
"x-source": "openapi/proweblook-com-openapi.json#/components/schemas/EmailCheckResponse",
"type": "object",
"required": [
"status"
],
"properties": {
"balance": {
"type": "integer",
"description": "Current remaining email credits after the check or refund attempt. Omitted when API authentication fails."
},
"status": {
"type": "boolean",
"description": "True for a completed check, including an invalid address; false for authentication, credit, or lookup failure."
},
"email": {
"type": "string",
"description": "Checked address; present on completed checks."
},
"emailformat": {
"type": "boolean",
"description": "Whether the address has valid syntax; present on completed checks."
},
"emailexist": {
"type": "boolean",
"description": "True for deliverable or catch-all results; present on completed checks."
},
"verdict": {
"type": "string",
"description": "Completed check verdict: deliverable, undeliverable, unknown (catch-all), or invalid_format."
},
"reason_code": {
"type": "string",
"description": "Lookup reason on completed checks or lookup failures; credit_refund_pending means restoration could not complete. Omitted for authentication or insufficient-credit errors."
},
"error": {
"type": "string",
"description": "Human-readable error when status is false."
}
}
}
Work with this as data
Every JSON Schema here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for schemas
4 MCP tools reach this
find_json_schemasBrowse and filter every JSON Schema in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This JSON Schema
curl "https://apis.io/api/v1/json-schemas/proweblook-com-email-check-response"
All schemas
curl "https://apis.io/api/v1/json-schemas?limit=25"
Discovery needs no key. Ratings and market analysis are Pro.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.