HighLevel Email Verification API
Documentation for Email ISV API
Documentation for Email ISV API
Every API here is available over the APIs.io API and to AI agents over MCP.
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.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.curl "https://apis.io/api/v1/apis/highlevel:highlevel-email-verification-api"
curl "https://apis.io/api/v1/apis?limit=25"
Calls without X-API-Key need no key. Calls with it need a paid plan — get a 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.
openapi: 3.2.0
info:
title: Email ISV Email Verification API
description: Documentation for Email ISV API
version: '1.0'
contact: {}
servers:
- url: https://services.leadconnectorhq.com
tags:
- name: Email Verification
description: Documentation for Email ISV API
paths:
/email/verify:
post:
operationId: verify-email
summary: Email Verification
description: Verify Email
parameters:
- name: Version
in: header
description: API Version
required: true
schema:
type: string
enum:
- '2021-07-28'
- name: locationId
required: true
in: query
example: 5DP4iH6HLkQsiKESj6rh
description: Location Id, The email verification charges will be deducted from this location (if rebilling is enabled) / company wallet
schema:
type: string
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/VerificationBodyDto'
responses:
'201':
description: Successful response
content:
application/json:
schema:
oneOf:
- $ref: '#/components/schemas/EmailVerifiedResponseDto'
- $ref: '#/components/schemas/EmailNotVerifiedResponseDto'
'400':
description: Bad Request
content:
application/json:
schema:
$ref: ../common/common-schemas.json#/components/schemas/BadRequestDTO
'401':
description: Unauthorized
content:
application/json:
schema:
$ref: ../common/common-schemas.json#/components/schemas/UnauthorizedDTO
'422':
description: Unprocessable Entity
content:
application/json:
schema:
$ref: ../common/common-schemas.json#/components/schemas/UnprocessableDTO
tags:
- Email Verification
security:
- Location-Access: []
components:
schemas:
EmailVerifiedResponseDto:
type: object
properties:
reason:
example:
- mailbox_does_not_exist
description: Reason for email verification failure
type: array
items:
type: string
result:
type: string
example: undeliverable
enum:
- deliverable
- undeliverable
- do_not_send
- unknown
- catch_all
description: Email verification result
risk:
type: string
example: low
enum:
- high
- low
- medium
- unknown
description: Risk level of email sending to bounce
address:
type: string
example: abc@xyz.com
description: Email address
leadconnectorRecomendation:
example:
isEmailValid: false
description: Lead Connector email verification recomendation
allOf:
- $ref: '#/components/schemas/LeadConnectorRecomandationDto'
required:
- result
- risk
- address
- leadconnectorRecomendation
VerificationBodyDto:
type: object
properties:
type:
type: string
example: email
enum:
- email
- contact
description: Email Verification type
verify:
type: string
example: abc@xyz.com
description: Email Verification recepient (email address / contactId)
required:
- type
- verify
EmailNotVerifiedResponseDto:
type: object
properties:
verified:
type: boolean
example: false
description: Email verification not processed
message:
type: string
example: Validation is disabled / proper config not found
description: Email verification failure message
address:
type: string
example: abc@xyz.com
description: Email address
required:
- verified
LeadConnectorRecomandationDto:
type: object
properties:
isEmailValid:
type: boolean
example: false
description: Email verification status
securitySchemes:
bearer:
scheme: bearer
bearerFormat: JWT
name: Authorization
in: header
description: Use the Access Token generated with user type as Sub-Account (OR) Private Integration Token of Sub-Account.
type: http
Location-Access:
scheme: bearer
bearerFormat: JWT
name: Authorization
in: header
description: Use the Access Token generated with user type as Sub-Account (OR) Private Integration Token of Sub-Account.
type: http
Agency-Access:
scheme: bearer
bearerFormat: JWT
name: Authorization
in: header
description: Use the Access Token generated with user type as Agency (OR) Private Integration Token of Agency.
type: http
x-tagGroups:
name: LC Email
tags:
- Email Verification