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(Delphi ActiveX) Outlook Send HTML Email with Embedded Images and Attachments

This example sends an HTML email with both embedded images and attachments. Other examples exist for:

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

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

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;
bCrlf: Integer;
sbHtmlBody: TChilkatStringBuilder;
jpgStarfish: TChilkatBinData;
jpgHedgeHogs: TChilkatBinData;
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.)
// 

// This example will send HTML email containing the following HTML body.
// After the 

// 	<html>
// 	<head>
// 	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
// 	<meta content="text/html; charset=utf-8">
// 	</head>
// 	<body bgcolor="#FFFFFF">
// 	<font face="Calibri">This is a test <b>HTML email with embedded images</b>.<br>
// 	<br>
// 	<img alt="" src="cid:starfish"><br>
// 	<img alt="" src="cid:hedgehogs"><br>
// 	</font>
// 	</body>
// 	</html>

// Build the HTML body...
bCrlf := 1;
sbHtmlBody := TChilkatStringBuilder.Create(Self);
sbHtmlBody.AppendLine('<html>',bCrlf);
sbHtmlBody.AppendLine('<head>',bCrlf);
sbHtmlBody.AppendLine('<meta http-equiv="Content-Type" content="text/html; charset=utf-8">',bCrlf);
sbHtmlBody.AppendLine('<meta content="text/html; charset=utf-8">',bCrlf);
sbHtmlBody.AppendLine('</head>',bCrlf);
sbHtmlBody.AppendLine('<body bgcolor="#FFFFFF">',bCrlf);
sbHtmlBody.AppendLine('<font face="Calibri">This is a test <b>HTML email with embedded images</b>.<br>',bCrlf);
sbHtmlBody.AppendLine('<br>',bCrlf);
sbHtmlBody.AppendLine('<img alt="" src="cid:starfish"><br>',bCrlf);
sbHtmlBody.AppendLine('<img alt="" src="cid:hedgehogs"><br>',bCrlf);
sbHtmlBody.AppendLine('</font>',bCrlf);
sbHtmlBody.AppendLine('</body>',bCrlf);
sbHtmlBody.AppendLine('</html>',bCrlf);

// Load the embedded image files.
jpgStarfish := TChilkatBinData.Create(Self);
jpgStarfish.LoadFile('qa_data/jpg/starfish.jpg');
jpgHedgeHogs := TChilkatBinData.Create(Self);
jpgHedgeHogs.LoadFile('qa_data/jpg/hedgehogs.jpg');

// Load files that are to be attached (not inline images)
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 HTML email with
// two embedded images and two attachments.
// 
// The only difference between an embedded inline image and an attachment is that the
// inline image must have a cid that corresponds to the "cid:" found in the "src" attribute
// of an IMG tag within the HTML body of the email.  (The inline image is also marked as "isInline",
// whereas the attachments are not, but I don't know if this actually makes a difference..)
// 

// 	{
// 	  "message": {
// 	    "subject": "Sample HTML Email with Embedded Images and Attachments",
// 	    "body": {
// 	      "contentType": "html",
// 	      "content": "The HTML body goes here..."
// 	    },
// 	    "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": "starfish.jpg",
// 	         "contentType": "image/jpeg",
// 	         "size": 6497,
// 	         "isInline": true,
// 	         "contentId": "starfish",
// 	         "contentLocation": null,
// 	         "contentBytes": "base64_data_here"
// 	       },
// 	       {
// 	         "@odata.type": "#microsoft.graph.fileAttachment",
// 	         "name": "hedgehogs.jpg",
// 	         "contentType": "image/jpeg",
// 	         "size": 48845,
// 	         "isInline": true,
// 	         "contentId": "hedgehogs",
// 	         "contentLocation": null,
// 	         "contentBytes": "base64_data_here"
// 	       },
// 	       {
// 	         "@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 HTML Email with Embedded Images and Attachments');
json.UpdateString('message.body.contentType','html');
json.UpdateString('message.body.content',sbHtmlBody.GetAsString());

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','starfish.jpg');
json.UpdateString('message.attachments[0].contentType','image/jpeg');
json.UpdateInt('message.attachments[0].size',jpgStarfish.NumBytes);
json.UpdateBool('message.attachments[0].isInline',1);
// This contentId must match the "cid:" in the HTML
json.UpdateString('message.attachments[0].contentId','starfish');
json.UpdateNull('message.attachments[0].contentLocation');
json.UpdateBd('message.attachments[0].contentBytes','base64',jpgStarfish.ControlInterface);

json.UpdateString('message.attachments[1]."@odata.type"','#microsoft.graph.fileAttachment');
json.UpdateString('message.attachments[1].name','hedgehogs.jpg');
json.UpdateString('message.attachments[1].contentType','image/jpeg');
json.UpdateInt('message.attachments[1].size',jpgHedgeHogs.NumBytes);
json.UpdateBool('message.attachments[1].isInline',1);
// This contentId must match the "cid:" in the HTML
json.UpdateString('message.attachments[1].contentId','hedgehogs');
json.UpdateNull('message.attachments[1].contentLocation');
json.UpdateBd('message.attachments[1].contentBytes','base64',jpgHedgeHogs.ControlInterface);

json.UpdateString('message.attachments[2]."@odata.type"','#microsoft.graph.fileAttachment');
json.UpdateString('message.attachments[2].name','fishing.pdf');
json.UpdateString('message.attachments[2].contentType','application/pdf');
json.UpdateInt('message.attachments[2].size',attach1.NumBytes);
json.UpdateBool('message.attachments[2].isInline',0);
json.UpdateBd('message.attachments[2].contentBytes','base64',attach1.ControlInterface);

json.UpdateString('message.attachments[3]."@odata.type"','#microsoft.graph.fileAttachment');
json.UpdateString('message.attachments[3].name','sample.docx');
json.UpdateString('message.attachments[3].contentType','application/vnd.openxmlformats-officedocument.wordprocessingml.document');
json.UpdateInt('message.attachments[3].size',attach2.NumBytes);
json.UpdateBool('message.attachments[3].isInline',0);
json.UpdateBd('message.attachments[3].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 HTML Mail Sent.');
  end;
end;

 

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