(MFC) Outlook Send Email with Attachments

This example sends a plain-text email with attachments. Other examples exist for:

• Sending plain-text email.
• Sending HTML email.
• Sending HTML email with embedded images.
• Sending HTML email with embedded images and attachments.

Note: This example requires Chilkat v9.5.0.68 or greater.

This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

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

void ChilkatSample(void)
    {
    CkString strOut;

    // Important: This example requires Chilkat v9.5.0.68 or greater.

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

    CkHttp http;

    // Use your previously obtained access token here:
    // See the following examples for getting an access token:
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
    //    Refresh Access Token (Azure AD v2.0 Endpoint).
    //    Refresh Access Token (Azure AD Endpoint).

    http.put_AuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN");

    // To send mail, we'll POST to the following endpoint:
    // 
    // POST /users/{id | userPrincipalName}/sendMail
    // 
    // (The special keyword "me" may be used in place of a principal name.)
    // 

    // Load the files to be attached.
    CkBinData attach1;
    attach1.LoadFile("qa_data/pdf/fishing.pdf");
    CkBinData attach2;
    attach2.LoadFile("qa_data/msword/sample.docx");

    // The body of the POST request contains JSON that specifies the email subject, body,
    // recipients, etc.  This example will build the following JSON plain-text email:
    // 

    // 	{
    // 	  "message": {
    // 	    "subject": "Sample Email with Attachments",
    // 	    "body": {
    // 	      "contentType": "Text",
    // 	      "content": "This is the plain-text body..."
    // 	    },
    // 	    "toRecipients": [
    // 	      {
    // 	        "emailAddress": {
    // 		  "name": "Chilkat Software",
    // 	          "address": "admin@chilkat.io"
    // 	        }
    // 	      },
    // 	      {
    // 	        "emailAddress": {
    // 	          "address": "chilkat.support@gmail.com"
    // 	        }
    // 	      }
    // 	    ],
    // 	    "ccRecipients": [
    // 	      {
    // 	        "emailAddress": {
    // 		  "name": "Chilkat Blog",
    // 		  "address": "admin@cknotes.com"
    // 	        }
    // 	      }
    // 	    ],
    // 	    "attachments": [
    // 	       {
    // 	         "@odata.type": "#microsoft.graph.fileAttachment",
    // 	         "name": "fishing.pdf",
    // 	         "contentType": "application/pdf",
    // 	         "size": <theActualSize>,
    // 	         "isInline": false,
    // 	         "contentBytes": "base64_data_here"
    // 	       },
    // 	       {
    // 	         "@odata.type": "#microsoft.graph.fileAttachment",
    // 	         "name": "sample.docx",
    // 	         "contentType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
    // 	         "size": <theActualSize>,
    // 	         "isInline": false,
    // 	         "contentBytes": "base64_data_here"
    // 	       }
    // 	    ]
    // 	  },
    // 	  "saveToSentItems": true
    // 	}
    // 
    // Build the above JSON.
    CkJsonObject json;
    json.UpdateString("message.subject","Sample Email with Attachments");
    json.UpdateString("message.body.contentType","Text");
    json.UpdateString("message.body.content","This is the plain-text body...");

    json.UpdateString("message.toRecipients[0].emailAddress.name","Chilkat Software");
    json.UpdateString("message.toRecipients[0].emailAddress.address","admin@chilkat.io");
    json.UpdateString("message.toRecipients[1].emailAddress.address","chilkat.support@gmail.com");
    json.UpdateString("message.ccRecipients[0].emailAddress.name","Chilkat Blog");
    json.UpdateString("message.ccRecipients[0].emailAddress.address","admin@cknotes.com");

    json.UpdateString("message.attachments[0].\"@odata.type\"","#microsoft.graph.fileAttachment");
    json.UpdateString("message.attachments[0].name","fishing.pdf");
    json.UpdateString("message.attachments[0].contentType","application/pdf");
    json.UpdateInt("message.attachments[0].size",attach1.get_NumBytes());
    json.UpdateBool("message.attachments[0].isInline",false);
    json.UpdateBd("message.attachments[0].contentBytes","base64",attach1);

    json.UpdateString("message.attachments[1].\"@odata.type\"","#microsoft.graph.fileAttachment");
    json.UpdateString("message.attachments[1].name","sample.docx");
    json.UpdateString("message.attachments[1].contentType","application/vnd.openxmlformats-officedocument.wordprocessingml.document");
    json.UpdateInt("message.attachments[1].size",attach2.get_NumBytes());
    json.UpdateBool("message.attachments[1].isInline",false);
    json.UpdateBd("message.attachments[1].contentBytes","base64",attach2);

    json.UpdateBool("saveToSentItems",true);

    // -------------------------------------------------------------
    // Important: This example requires Chilkat v9.5.0.68 or greater.
    // -------------------------------------------------------------

    // Send the HTTP POST (i.e. send the HTML email)
    CkHttpResponse *resp = http.PostJson3("https://graph.microsoft.com/v1.0/me/sendMail","application/json",json);
    if (http.get_LastMethodSuccess() != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // The send succeeded if the response status code = 202.
    // In the success case, there is no response body.  (We just get the response code to know that it succeeded.)
    if (resp->get_StatusCode() != 202) {
        json.Load(resp->bodyStr());
        json.put_EmitCompact(false);
        strOut.append(json.emit());
        strOut.append("\r\n");
        strOut.append("Failed, response status code = ");
        strOut.appendInt(resp->get_StatusCode());
        strOut.append("\r\n");
    }
    else {
        strOut.append("Outlook Mail with Attachments Sent.");
        strOut.append("\r\n");
    }

    delete resp;


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }