(Delphi DLL) Outlook -- List Messages in a Specified Folder

Demonstrates how to list the messages in a particular Outlook mailbox folder.

Note: This example requires Chilkat v9.5.0.67 or greater.

Chilkat for Delphi Downloads

Chilkat non-ActiveX DLL for Delphi

Chilkat ActiveX DLL for Delphi

* The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, Hashtable, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
sbResponse: HCkStringBuilder;
htFolderMap: HCkHashtable;
sbMap: HCkStringBuilder;
folderId: PWideChar;
success: Boolean;
json: HCkJsonObject;
i: Integer;
numMessages: Integer;
messageId: PWideChar;
numRecipients: Integer;
j: Integer;
bodyContent: PWideChar;

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

http := CkHttp_Create();

// 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).

CkHttp_putAuthToken(http,'MICROSOFT_GRAPH_ACCESS_TOKEN');

sbResponse := CkStringBuilder_Create();

// Sends:  GET /users/{user_id | userPrincipalName}/mailFolders/{folder_id}/messages
// Note: It is also possible to use the literal string "me" for the current logged-on user.
// For example: GET /me/mailFolders/{folder_id}/messages

CkHttp_ClearUrlVars(http);
CkHttp_SetUrlVar(http,'userPrincipalName','chilkatsoft@outlook.com');

// In this example, we'd like to get the messages in the folder "/Inbox/abc",
// but we must specify the corresponding folder_id.  The best way to do this is to create
// a local map of folderPaths-to-folderIds.
// This example does it:  Create Outlook Folder Map)
htFolderMap := CkHashtable_Create();
sbMap := CkStringBuilder_Create();
CkStringBuilder_LoadFile(sbMap,'qa_data/outlook/folderMap.xml','utf-8');
CkHashtable_AddFromXmlSb(htFolderMap,sbMap);

// Get the ID for the "/Inbox/abc" folder:
folderId := CkHashtable__lookupStr(htFolderMap,'/Inbox/abc');
if (CkHashtable_getLastMethodSuccess(htFolderMap) <> True) then
  begin
    Memo1.Lines.Add('Folder ID not found');
    Exit;
  end;
CkHttp_SetUrlVar(http,'folder_id',folderId);

// Send the request to list the messages.
success := CkHttp_QuickGetSb(http,'https://graph.microsoft.com/v1.0/users/{$userPrincipalName}/mailFolders/{$folder_id}/messages',sbResponse);
if ((success <> True) and (CkHttp_getLastStatus(http) = 0)) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

json := CkJsonObject_Create();
CkJsonObject_LoadSb(json,sbResponse);
CkJsonObject_putEmitCompact(json,False);

Memo1.Lines.Add('Status code = ' + IntToStr(CkHttp_getLastStatus(http)));
if (CkHttp_getLastStatus(http) <> 200) then
  begin
    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Failed.');
  end;

// In my test case, the raw JSON returned is shown below.
// Iterate over the messages to get information about each..

i := 0;
numMessages := CkJsonObject_SizeOfArray(json,'value');
while i < numMessages do
  begin
    CkJsonObject_putI(json,i);

    // This is the id for the email message.
    // For REST API calls that require particular email message id, this is what should be used..
    messageId := CkJsonObject__stringOf(json,'value[i].id');
    Memo1.Lines.Add('id: ' + messageId);

    Memo1.Lines.Add('From Name: ' + CkJsonObject__stringOf(json,'value[i].from.emailAddress.name'));
    Memo1.Lines.Add('From Addr: ' + CkJsonObject__stringOf(json,'value[i].from.emailAddress.address'));

    numRecipients := CkJsonObject_SizeOfArray(json,'value[i].toRecipients');
    j := 0;
    while j < numRecipients do
      begin
        CkJsonObject_putJ(json,j);
        Memo1.Lines.Add('To Name: ' + CkJsonObject__stringOf(json,'value[i].toRecipients[j].emailAddress.name'));
        Memo1.Lines.Add('To Addr: ' + CkJsonObject__stringOf(json,'value[i].toRecipients[j].emailAddress.address'));
        j := j + 1;
      end;

    Memo1.Lines.Add('Subject: ' + CkJsonObject__stringOf(json,'value[i].subject'));
    Memo1.Lines.Add('Has Attachments:' + IntToStr(CkJsonObject_BoolOf(json,'value[i].hasAttachments')));

    Memo1.Lines.Add('Body Content-Type:' + CkJsonObject__stringOf(json,'value[i].body.contentType'));
    bodyContent := CkJsonObject__stringOf(json,'value[i].body.content');
    // ...

    Memo1.Lines.Add('----');

    i := i + 1;
  end;

// The output of the above loop:

// id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA==
// From Name: Chilkat Software
// From Addr: support@chilkatsoft.com
// To Name: Chilkat Software
// To Addr: chilkatsoft@outlook.com
// Subject: email with attachments
// Has Attachments:True
// Body Content-Type:html
// ----
// id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2gAAAA==
// From Name: Chilkat Software
// From Addr: support@chilkatsoft.com
// To Name: Chilkat Software
// To Addr: chilkatsoft@outlook.com
// To Name: admin@chilkat.io
// To Addr: admin@chilkat.io
// Subject: Re: Test HTML email with embedded images.
// Has Attachments:False
// Body Content-Type:html
// ----
// id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2QAAAA==
// From Name: Chilkat Software
// From Addr: support@chilkatsoft.com
// To Name: chilkatsoft@outlook.com
// To Addr: chilkatsoft@outlook.com
// To Name: admin@chilkat.io
// To Addr: admin@chilkat.io
// Subject: Test HTML email with embedded images.
// Has Attachments:False
// Body Content-Type:html
// ----

// ------------------------------------------------------
// This is the raw JSON response:

// {
//   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('chilkatsoft%40outlook.com')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAAA%3D')/messages",
//   "value": [
//     {
//       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADBQ0bb\"",
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA==",
//       "createdDateTime": "2017-05-10T00:27:40Z",
//       "lastModifiedDateTime": "2017-05-10T00:30:51Z",
//       "changeKey": "CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADBQ0bb",
//       "categories": [
//       ],
//       "receivedDateTime": "2017-05-10T00:27:41Z",
//       "sentDateTime": "2017-05-10T00:27:12Z",
//       "hasAttachments": true,
//       "internetMessageId": "<9a65d233-0882-d346-f405-202a8b1a3acd@chilkatsoft.com>",
//       "subject": "email with attachments",
//       "bodyPreview": "This email has attachments...",
//       "importance": "normal",
//       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAAA=",
//       "conversationId": "AQQkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAQABQcNI8CG1xKpGjzxJTpoOE=",
//       "isDeliveryReceiptRequested": null,
//       "isReadReceiptRequested": false,
//       "isRead": true,
//       "isDraft": false,
//       "webLink": "https://outlook.live.com/owa/?ItemID=AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5%2BvF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA%3D%3D&exvsurl=1&viewmodel=ReadMessageItem",
//       "inferenceClassification": "focused",
//       "body": {
//         "contentType": "html",
//         "content": "<html>...</html>\r\n"
//       },
//       "sender": {
//         "emailAddress": {
//           "name": "Chilkat Software",
//           "address": "support@chilkatsoft.com"
//         }
//       },
//       "from": {
//         "emailAddress": {
//           "name": "Chilkat Software",
//           "address": "support@chilkatsoft.com"
//         }
//       },
//       "toRecipients": [
//         {
//           "emailAddress": {
//             "name": "Chilkat Software",
//             "address": "chilkatsoft@outlook.com"
//           }
//         }
//       ],
//       "ccRecipients": [
//       ],
//       "bccRecipients": [
//       ],
//       "replyTo": [
//       ]
//     },
//     {
//       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADBQ0bZ\"",
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2gAAAA==",
//       "createdDateTime": "2017-05-10T00:25:28Z",
//       "lastModifiedDateTime": "2017-05-10T00:25:44Z",
//       "changeKey": "CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADBQ0bZ",
//       "categories": [
//       ],
//       "receivedDateTime": "2017-05-10T00:25:28Z",
//       "sentDateTime": "2017-05-10T00:25:10Z",
//       "hasAttachments": false,
//       "internetMessageId": "<707ff357-28ea-7ebd-9409-f46d752e871f@chilkatsoft.com>",
//       "subject": "Re: Test HTML email with embedded images.",
//       "bodyPreview": "My reply...",
//       "importance": "normal",
//       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAAA=",
//       "conversationId": "AQQkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAQACYVrc_6yptKn9tuOqBiUMQ=",
//       "isDeliveryReceiptRequested": null,
//       "isReadReceiptRequested": false,
//       "isRead": true,
//       "isDraft": false,
//       "webLink": "https://outlook.live.com/owa/?ItemID=AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5%2BvF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2gAAAA%3D%3D&exvsurl=1&viewmodel=ReadMessageItem",
//       "inferenceClassification": "focused",
//       "body": {
//         "contentType": "html",
//         "content": "<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\r\n<meta content=\"text/html; charset=utf-8\">\r\n</head>\r\n<body bgcolor=\"#FFFFFF\">...</body>\r\n</html>\r\n"
//       },
//       "sender": {
//         "emailAddress": {
//           "name": "Chilkat Software",
// 
//           "address": "support@chilkatsoft.com"
//         }
//       },
//       "from": {
//         "emailAddress": {
//           "name": "Chilkat Software",
//           "address": "support@chilkatsoft.com"
//         }
//       },
//       "toRecipients": [
//         {
//           "emailAddress": {
//             "name": "Chilkat Software",
//             "address": "chilkatsoft@outlook.com"
//           }
//         },
//         {
//           "emailAddress": {
//             "name": "admin@chilkat.io",
//             "address": "admin@chilkat.io"
//           }
//         }
//       ],
//       "ccRecipients": [
//         {
//           "emailAddress": {
//             "name": "Matt Smith",
//             "address": "chilkat.support@gmail.com"
//           }
//         }
//       ],
//       "bccRecipients": [
//       ],
//       "replyTo": [
//       ]
//     },
//     {
//       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADBQ0bY\"",
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2QAAAA==",
//       "createdDateTime": "2017-05-10T00:22:23Z",
//       "lastModifiedDateTime": "2017-05-10T00:22:45Z",
//       "changeKey": "CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADBQ0bY",
//       "categories": [
//       ],
//       "receivedDateTime": "2017-05-10T00:22:23Z",
//       "sentDateTime": "2017-05-10T00:22:03Z",
//       "hasAttachments": false,
//       "internetMessageId": "<4da724c6-fa94-5516-81d5-9cdf152eddc5@chilkatsoft.com>",
//       "subject": "Test HTML email with embedded images.",
//       "bodyPreview": "This is a test email with images...",
//       "importance": "normal",
//       "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAAA=",
//       "conversationId": "AQQkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAQACYVrc_6yptKn9tuOqBiUMQ=",
//       "isDeliveryReceiptRequested": null,
//       "isReadReceiptRequested": false,
//       "isRead": true,
//       "isDraft": false,
//       "webLink": "https://outlook.live.com/owa/?ItemID=AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5%2BvF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2QAAAA%3D%3D&exvsurl=1&viewmodel=ReadMessageItem",
//       "inferenceClassification": "focused",
//       "body": {
//         "contentType": "html",
//         "content": "<html>...</html>\r\n"
//       },
//       "sender": {
//         "emailAddress": {
//           "name": "Chilkat Software",
//           "address": "support@chilkatsoft.com"
//         }
//       },
//       "from": {
//         "emailAddress": {
//           "name": "Chilkat Software",
//           "address": "support@chilkatsoft.com"
//         }
//       },
//       "toRecipients": [
//         {
//           "emailAddress": {
//             "name": "chilkatsoft@outlook.com",
//             "address": "chilkatsoft@outlook.com"
//           }
//         },
//         {
//           "emailAddress": {
//             "name": "admin@chilkat.io",
//             "address": "admin@chilkat.io"
//           }
//         }
//       ],
//       "ccRecipients": [
//         {
//           "emailAddress": {
//             "name": "Matt Smith",
//             "address": "chilkat.support@gmail.com"
//           }
//         }
//       ],
//       "bccRecipients": [
//       ],
//       "replyTo": [
//       ]
//     }
//   ]
// 
// }

CkHttp_Dispose(http);
CkStringBuilder_Dispose(sbResponse);
CkHashtable_Dispose(htFolderMap);
CkStringBuilder_Dispose(sbMap);
CkJsonObject_Dispose(json);

end;