Create Subscriber

The Create Subscriber command allows you to add a new Subscriber and set the related Subscriber an Custom Data.  See REST API Subscribers Overview for a table of Subscriber data available to POST.  

POST /subscribers


Request Body Parameters

The Create Subscriber command requires the following in the Posted JSON:

  • Email Address: "email": "[email]"

All other POST-able fields are optional, and can be found in the Data Fields table in REST API Subscribers Overview.   

To create a Subscriber in a Customer Key enabled Realm, you must also include the Customer Key in the JSON: 

  • Customer Key: "customerKey": "[customerKey]"

Request Body Example

Using Create Subscriber with all arguments, line breaks in JSON for readability:

curl --request POST \ 
--url '' \
--header 'authorization: Basic bXlBY2NvdW50Onh5enB3ZDEyMw==' \
--header 'content-type: application/json' \
--header 'accept: application/vnd.whatcounts-v1+json' \
--data '{ "email": "", "firstName": "Jon", "lastName": "Doe", "company": "My Company", "address1": "123 Some Street North", "address2": "Suite 500", "city": "My City", "state": "WA", "zip": "98000", "country": "United States", "phone": "(206) 555 1212", "fax": "", "customData": { "text": "text", "unicode": "unicode text", "large": "big", "number": 12, "float": 12.12, "date": "2016-07-04" } }' \

Response Body

The response returns all API available Subscriber and Custom Data in JSON format.  Blank data fields are not returned.  Based on the example above, the response returns:

HTTP/1.1 200 OK
Server: serverName
Content-Type: application/json
Content-Length: 926
Link: <>;
Date: Fri, 17 Jun 2016 12:54:44 GMT
"subscriberId": 7160984
"realmId": 1561
"email": ""
"firstName": "Jon"
"lastName": "Doe"
"company": "My Company"
"address1": "123 Some Street North"
"address2": "Suite 500"
"city": "My City"
"state": "WA"
"zip": "98000"
"country": "United States"
"phone": "(206) 555 1212"
"fax": ""
"createdDate": "May 21, 2012 9:14:16 AM"
"updatedDate": "Nov 2, 2015 10:31:27 AM"
"ipAddress": ""
"md5Encryption": "C8ADED17D5F088E8262BF31ED933B7D4"
"sha1Encryption": "356B1860247728C81486A35062688F302D96C2D1"
"customData": {
  "text": "text"
  "unicode": "unicode text"
  "large": "big"
  "number": 12
  "float": 12.12
  "date": "2016-07-04"
"skip": 1
"max": 0

Error Response

Error Response Codes include both Client Errors (4xx) and Server Errors (5xx).  Descriptions of each can be found in Response Codes

For example, if the required Email Address is missing, the error would appear as:

"error": "The Email field must be at least 5 characters long"
"status": "Internal Server Error"
"statusCode": 500
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