C

SendGrid Hello World -- Send Simple Email to Single Recipient

See more SendGrid Examples

Sends an email to a single recipient using SendGrid. C

#include <C_CkHttp.h>
#include <C_CkJsonObject.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttp http;
    HCkJsonObject json;
    HCkHttpResponse resp;

    success = FALSE;

    //  This example assumes the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    http = CkHttp_Create();

    //  Implements the following CURL command:

    //  curl --request POST \
    //    --url https://api.sendgrid.com/v3/mail/send \
    //    --header 'Authorization: Bearer YOUR_API_KEY' \
    //    --header 'Content-Type: application/json' \
    //    --data '{"personalizations": [{"to": [{"email": "recipient@example.com", "name": "Recipient Name"}]}],"from": {"email": "sendeexampexample@example.com"},"subject": "Hello, World!","content": [{"type": "text/plain", "value": "Heya!"}]}'

    //  Use the following online tool to generate HTTP code from a CURL command
    //  Convert a cURL Command to HTTP Source Code

    //  Use this online tool to generate code from sample JSON:
    //  Generate Code to Create JSON

    //  The following JSON is sent in the request body.

    //  {
    //    "personalizations": [
    //      {
    //        "to": [
    //          {
    //            "email": "recipient@example.com",
    //            "name": "Recipient Name"
    //          }
    //        ]
    //      }
    //    ],
    //    "from": {
    //      "email": "sendeexampexample@example.com"
    //    },
    //    "subject": "Hello, World!",
    //    "content": [
    //      {
    //        "type": "text/plain",
    //        "value": "Heya!"
    //      }
    //    ]
    //  }

    json = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"personalizations[0].to[0].email","recipient@example.com");
    //  The "name" is optional.
    CkJsonObject_UpdateString(json,"personalizations[0].to[0].name","Recipient Name");
    CkJsonObject_UpdateString(json,"from.email","sendeexampexample@example.com");
    CkJsonObject_UpdateString(json,"subject","Hello, World!");
    CkJsonObject_UpdateString(json,"content[0].type","text/plain");
    CkJsonObject_UpdateString(json,"content[0].value","Heya!");

    //  Adds the "Authorization: Bearer YOUR_API_KEY" header.
    CkHttp_putAuthToken(http,"YOUR_API_KEY");

    resp = CkHttpResponse_Create();
    success = CkHttp_HttpJson(http,"POST","https://api.sendgrid.com/v3/mail/send",json,"application/json",resp);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkJsonObject_Dispose(json);
        CkHttpResponse_Dispose(resp);
        return;
    }

    if (CkHttp_getLastMethodSuccess(http) != TRUE) {
        printf("%s\n",CkHttp_lastErrorText(http));
    }
    else {
        printf("response status code: %d\n",CkHttpResponse_getStatusCode(resp));
        //  Display the response.
        //  If successful, the response code is 202 and the response body string is empty.
        //  (The response body string may also be empty for error response codes.)
        printf("%s\n",CkHttpResponse_bodyStr(resp));
    }



    CkHttp_Dispose(http);
    CkJsonObject_Dispose(json);
    CkHttpResponse_Dispose(resp);

    }