(Delphi ActiveX) 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.

Chilkat for Delphi Downloads

Chilkat ActiveX DLL for Delphi

Chilkat non-ActiveX DLL for Delphi

* The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
attach1: TChilkatBinData;
attach2: TChilkatBinData;
json: TChilkatJsonObject;
resp: IChilkatHttpResponse;

begin
// 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.

http := TChilkatHttp.Create(Self);

// 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.
attach1 := TChilkatBinData.Create(Self);
attach1.LoadFile('qa_data/pdf/fishing.pdf');
attach2 := TChilkatBinData.Create(Self);
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.
json := TChilkatJsonObject.Create(Self);
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',0);
json.UpdateBd('message.attachments[0].contentBytes','base64',attach1.ControlInterface);

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',0);
json.UpdateBd('message.attachments[1].contentBytes','base64',attach2.ControlInterface);

json.UpdateBool('saveToSentItems',1);

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

// Send the HTTP POST (i.e. send the HTML email)
resp := http.PostJson3('https://graph.microsoft.com/v1.0/me/sendMail','application/json',json.ControlInterface);
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// 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) then
  begin
    json.Load(resp.BodyStr);
    json.EmitCompact := 0;
    Memo1.Lines.Add(json.Emit());
    Memo1.Lines.Add('Failed, response status code = ' + IntToStr(resp.StatusCode));
  end
else
  begin
    Memo1.Lines.Add('Outlook Mail with Attachments Sent.');
  end;
end;