(Delphi ActiveX) Office365 IMAP with OAuth2 Authentication

See more Office365 Examples

Demonstrates how to authenticate using OAuth2 with outlook.office365.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
jsonToken: TChilkatJsonObject;
success: Integer;
imap: TChilkatImap;

begin
// An Office365 OAuth2 access token must first be obtained prior
// to running this code.

// Getting the OAuth2 access token for the 1st time requires the O365 account owner's 
// interactive authorizaition via a web browser.  Afterwards, the access token
// can be repeatedly refreshed automatically.

// See the following examples for getting and refreshing an OAuth2 access token

// Get Office365 SMTP/IMAP/POP3 OAuth2 Access Token
// Refresh Office365 SMTP/IMAP/POP3 OAuth2 Access Token

// First get our previously obtained OAuth2 access token.
jsonToken := TChilkatJsonObject.Create(Self);
success := jsonToken.LoadFile('qa_data/tokens/office365.json');
if (success = 0) then
  begin
    Memo1.Lines.Add('Failed to open the office365 OAuth JSON file.');
    Exit;
  end;

imap := TChilkatImap.Create(Self);

imap.Ssl := 1;
imap.Port := 993;

// Connect to the Office365 IMAP server.
success := imap.Connect('outlook.office365.com');
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Use OAuth2 authentication.
imap.AuthMethod := 'XOAUTH2';

// Login using our username (i.e. email address) and the access token for the password.
success := imap.Login('OFFICE365_EMAIL_ADDRESS',jsonToken.StringOf('access_token'));
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('O365 OAuth authentication is successful.');

// Do something...
success := imap.SelectMailbox('Inbox');
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Your application can continue to do other things in the IMAP session....

// When finished, logout and close the connection.
success := imap.Logout();
success := imap.Disconnect();

Memo1.Lines.Add('Finished.');
end;