JSON vs POST data

With the REST API you use HTTP POST requests to send data to SMTPeter. The posted data can either be in JSON format, or url-encoded format. Sending data in JSON format is slightly more powerful than sending traditional POST data, because JSON allows you to send nested data.

The results that are sent back by SMTPeter are most of the times JSON formatted, unless it makes more sense to use a different formatting (for example, if you use the REST API to download a jpeg image, or a HTML string). The "content-type" should be inspected to find out what kind of data is returned.

Example API call with POST data

The following code shows an example communication between a client application and SMTPeter. For this example, we have truncated the data that is actually sent.

POST /v1/send?access_token=YOUR_API_TOKEN HTTP/1.0
Host: www.smtpeter.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 1484


Example with JSON data

The other way to send data to the REST API is to JSON-encode your input. This works essentially the same as sending traditional form data, but you must of course set the 'Content-Type' to 'application/json':

POST /v1/send?access_token={YOUR_API_TOKEN} HTTP/1.0
Host: www.smtpeter.com
Content-Type: application/json
Content-Length: 246

    "envelope":     "info@example.com",
    "recipient":    "john@doe.com",
    "subject":      "This is the subject",
    "html":         "This is example content",
    "from":         "info@example.com",
    "to":           "john@doe.com"