C++

SendGrid -- Send Email with Attachment

See more SendGrid Examples

Sends an email with an attachment. C++

#include <CkHttp.h>
#include <CkJsonObject.h>
#include <CkBinData.h>
#include <CkHttpResponse.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkHttp http;

    //  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"
    //      }
    //    ]
    //  }

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

    //  Load a file to be attached.
    CkBinData bd;
    success = bd.LoadFile("qa_data/pdf/hello.pdf");

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

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

    CkHttpResponse resp;
    success = http.HttpJson("POST","https://api.sendgrid.com/v3/mail/send",json,"application/json",resp);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    int respStatusCode = resp.get_StatusCode();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    if (respStatusCode != 202) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << resp.header() << "\r\n";
        std::cout << "Response Body:" << "\r\n";
        std::cout << resp.bodyStr() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

    std::cout << "Success." << "\r\n";
    }