(Delphi DLL) Office365 IMAP with OAuth2 Authentication

See more Office365 Examples

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, Imap, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
jsonToken: HCkJsonObject;
success: Boolean;
imap: HCkImap;

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 := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/office365.json');
if (success = False) then
  begin
    Memo1.Lines.Add('Failed to open the office365 OAuth JSON file.');
    Exit;
  end;

imap := CkImap_Create();

CkImap_putSsl(imap,True);
CkImap_putPort(imap,993);

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

// Use OAuth2 authentication.
CkImap_putAuthMethod(imap,'XOAUTH2');

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

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

// Do something...
success := CkImap_SelectMailbox(imap,'Inbox');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

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

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

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

CkJsonObject_Dispose(jsonToken);
CkImap_Dispose(imap);

end;