(Delphi ActiveX) Office365 Send Email from Shared Mailbox

See more Office365 Examples

Demonstrates how to send email from a shared mailbox, from smtp.office365.com using OAuth2 authentication.

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;
mailman: TChilkatMailMan;
email: TChilkatEmail;

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

// 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');

mailman := TChilkatMailMan.Create(Self);

mailman.SmtpHost := 'smtp.office365.com';
mailman.SmtpPort := 587;
mailman.StartTLS := 1;

// In case of shared mailbox access using OAuth, the application needs to obtain the access token on behalf of a user
// but replace the SMTP username with the email address of the shared mailbox.

// Login using the shared mailbox email address for the username, and the access token for the password.
// See Office 365 SASL XOAUTH2 format 

// Use your Office365 email address for the SmtpUsername.
mailman.SmtpUsername := 'SHARED_MAILBOX_EMAIL_ADDRESS';
mailman.OAuth2AccessToken := jsonToken.StringOf('access_token');

// Create a new email object
email := TChilkatEmail.Create(Self);

email.Subject := 'This is a test';
email.Body := 'This is a test';
email.From := 'MY_NAME <SHARED_MAILBOX_EMAIL_ADDRESS>';
success := email.AddTo('John Doe','somebody@example.com');

// Call SendEmail to connect to the SMTP server and send.
// The connection (i.e. session) to the SMTP server remains
// open so that subsequent SendEmail calls may use the
// same connection.  
success := mailman.SendEmail(email.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

success := mailman.CloseSmtpConnection();
if (success <> 1) then
  begin
    Memo1.Lines.Add('Connection to SMTP server not closed cleanly.');
  end;

Memo1.Lines.Add('Mail Sent!');
end;