Pascal (Lazarus/Delphi)

Outlook -- Delete Email

See more Outlook Examples

Demonstrates how to delete email using the Microsoft Graph API.

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

Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http,
  Chilkat.StringBuilder,
  Chilkat.Hashtable,
  Chilkat.JsonObject;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  htFolderMap: THashtable;
  sbMap: TStringBuilder;
  folderId: string;
  json: TJsonObject;
  sbResponse: TStringBuilder;
  resp: string;
  messageId: string;
  i: Integer;
  numEmails: Integer;

begin
  success := False;

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

  http := THttp.Create;

  //  Use your previously obtained access token here:
  http.AuthToken := 'MICROSOFT_GRAPH_ACCESS_TOKEN';

  //  This example will search /Inbox for a message we want to delete.
  //  First we need to get the folder ID for /Inbox.
  //  Then we'll search for messages based on some criteria, and delete the matching messages.

  //  Get the folder ID for /Inbox from the folder map created by this example 
  htFolderMap := THashtable.Create;
  sbMap := TStringBuilder.Create;
  sbMap.LoadFile('qa_data/outlook/folderMap.xml','utf-8');
  htFolderMap.AddFromXmlSb(sbMap);

  //  Get the ID for the "/Inbox" folder:
  folderId := htFolderMap.LookupStr('/Inbox');
  if (htFolderMap.LastMethodSuccess <> True) then
    begin
      WriteLn('Folder ID not found');
      Exit;
    end;

  success := True;
  json := TJsonObject.Create;
  json.EmitCompact := False;

  //  Search for emails in this folder with the phrase "Amazon SES" in the subject, and return only the id and subject.
  http.SetUrlVar('folder_id',folderId);
  http.SetUrlVar('select','id,subject');
  http.SetUrlVar('filter','contains(subject,''Amazon SES'')');

  sbResponse := TStringBuilder.Create;
  success := http.QuickGetSb('https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$filter={$filter}&$select={$select}',sbResponse);
  if (success <> True) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;
  json.LoadSb(sbResponse);
  //  Show the results..
  WriteLn(json.Emit());

  //  Sample results:

  //  	{
  //  	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA')/messages(id,subject)",
  //  	  "value": [
  //  	    {
  //  	      "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAA1jyl6\"",
  //  	      "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_AAAAA=",
  //  	      "subject": "Amazon SES Address Verification Request in region US West (Oregon)"
  //  	    },
  //  	    {
  //  	      "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAA1jyl7\"",
  //  	      "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_EAAAA=",
  //  	      "subject": "Amazon SES Address Verification Request in region US West (Oregon)"
  //  	    }
  //  	  ]
  //  	}
  //  

  //  ------------
  //  Proceed to delete each of the above emails...

  i := 0;
  numEmails := json.SizeOfArray('value');
  while i < numEmails do
    begin
      json.I := i;

      messageId := json.StringOf('value[i].id');
      http.SetUrlVar('message_id',messageId);
      WriteLn('Deleting ' + messageId);
      resp := http.QuickDeleteStr('https://graph.microsoft.com/v1.0/me/messages/{$message_id}');
      if (http.LastMethodSuccess <> True) then
        begin
          WriteLn(http.LastErrorText);
          Exit;
        end;

      //  A 204 response indicates success.
      if (http.LastStatus = 204) then
        begin
          WriteLn('Message deleted.');
        end
      else
        begin
          WriteLn('Message not deleted.');
          WriteLn(resp);
        end;
      i := i + 1;
    end;

  //  Sample output:

  //  Deleting AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_AAAAA=
  //  Message deleted.
  //  Deleting AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_EAAAA=
  //  Message deleted.
  //  


  http.Free;
  htFolderMap.Free;
  sbMap.Free;
  json.Free;
  sbResponse.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.