C

SendGrid -- Send Email with Attachment

See more SendGrid Examples

Sends an email with an attachment. C

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

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttp http;
    HCkJsonObject json;
    HCkBinData bd;
    HCkHttpResponse resp;
    int respStatusCode;

    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"}]}],"from": {"email": "sender@example.com"},"subject":"Hello, World!","content": [{"type": "text/html","value": "Hey,<br>Please find attachment."}], "attachments": [{"content": "BASE64_ENCODED_CONTENT", "type": "text/plain", "filename": "attachment.txt"}]}'

    //  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"
    //          }
    //        ]
    //      }
    //    ],
    //    "from": {
    //      "email": "sender@example.com"
    //    },
    //    "subject": "Hello, World!",
    //    "content": [
    //      {
    //        "type": "text/html",
    //        "value": "Hey,<br>Please find attachment."
    //      }
    //    ],
    //    "attachments": [
    //      {
    //        "content": "BASE64_ENCODED_CONTENT",
    //        "type": "text/plain",
    //        "filename": "attachment.txt"
    //      }
    //    ]
    //  }

    json = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"personalizations[0].to[0].email","recipient@example.com");
    CkJsonObject_UpdateString(json,"from.email","sender@example.com");
    CkJsonObject_UpdateString(json,"subject","Hello, World!");
    CkJsonObject_UpdateString(json,"content[0].type","text/html");
    CkJsonObject_UpdateString(json,"content[0].value","Hey,<br>Please find attachment.");

    //  Load a file to be attached.
    bd = CkBinData_Create();
    success = CkBinData_LoadFile(bd,"qa_data/pdf/hello.pdf");

    CkJsonObject_UpdateString(json,"attachments[0].content",CkBinData_getEncoded(bd,"base64"));
    CkJsonObject_UpdateString(json,"attachments[0].type","application/pdf");
    CkJsonObject_UpdateString(json,"attachments[0].filename","hello.pdf");

    //  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);
        CkBinData_Dispose(bd);
        CkHttpResponse_Dispose(resp);
        return;
    }

    respStatusCode = CkHttpResponse_getStatusCode(resp);
    printf("Response Status Code = %d\n",respStatusCode);
    if (respStatusCode != 202) {
        printf("Response Header:\n");
        printf("%s\n",CkHttpResponse_header(resp));
        printf("Response Body:\n");
        printf("%s\n",CkHttpResponse_bodyStr(resp));
        printf("Failed.\n");
        CkHttp_Dispose(http);
        CkJsonObject_Dispose(json);
        CkBinData_Dispose(bd);
        CkHttpResponse_Dispose(resp);
        return;
    }

    printf("Success.\n");


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

    }