/api/v1/newsletter/register-contact

API endpoint documentation

post

Tags:newsletter

Operation ID: postApiV1NewsletterRegister-contact

Query Parameters

apiKeystring

required

Your BizKitHub API key (passed as GET parameter)

Get API Key →

Body

emailstring

required

Contact email address.

The system validates the input as a standard email address and automatically applies normalization and canonicalization.

All API responses return the normalized form, and each email address is globally unique per contact within the system.

Example: "jan@barasek.com"

sourcestring

optional

Example: "web"

groupsarray

optional

phonestring

optional

Contact phone number in international (national) format.

Preferred format: +<country_code> <local_number>

Leading plus sign (+) is required
Followed by the country calling code (e.g. 420)
One space after the country code
Full local number without spaces

Example: +420 777123456
This format ensures unambiguous storage, validation, and compatibility with SMS, calling, and third-party integrations (e.g. Twilio, WhatsApp, CRM systems).

Example: "+420 777123456"

firstNamestring

optional

Example: "Jan"

lastNamestring

optional

Example: "Barášek"

Responses

200

No description

Base URL:

https://bizkithub.com

Example Request

fetch('https://bizkithub.com/api/v1/newsletter/register-contact?apiKey=YOUR_API_KEY', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
        "email": "jan@barasek.com",
        "source": "web",
        "groups": [
            "trainer"
        ],
        "phone": "+420 777123456",
        "firstName": "Jan",
        "lastName": "Barášek"
    })
})

Example Response

HTTP 200Success Response

{
  "success": false
}

🔑 API Key Required

All BizKitHub API endpoints require authentication using an API key. The API key must be passed as a GET parameter in the URL for all requests.

Get API Key →API Overview →

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Last updated: January 2, 2026