Dart

Outlook Send Email with Attachments

See more Outlook Examples

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.

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

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // 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.

  final http = CkHttp();

  // 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.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.
  final attach1 = CkBinData();
  attach1.loadFile('qa_data/pdf/fishing.pdf');
  final attach2 = CkBinData();
  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.
  final json = CkJsonObject();
  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.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.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)
  final resp = CkHttpResponse();
  try {
    http.httpJson('POST', 'https://graph.microsoft.com/v1.0/me/sendMail', json, 'application/json', resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    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.statusCode != 202) {
    json.load(resp.bodyStr);
    json.emitCompact = false;
    print(json.emit());
    print('Failed, response status code = ${resp.statusCode}');
  } else {
    print('Outlook Mail with Attachments Sent.');
  }
}