(PHP Extension) Office365 Send Email from Shared Mailbox

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

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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// 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 = new CkJsonObject();
$success = $jsonToken->LoadFile('qa_data/tokens/office365.json');

$mailman = new CkMailMan();

$mailman->put_SmtpHost('smtp.office365.com');
$mailman->put_SmtpPort(587);
$mailman->put_StartTLS(true);

// 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->put_SmtpUsername('SHARED_MAILBOX_EMAIL_ADDRESS');
$mailman->put_OAuth2AccessToken($jsonToken->stringOf('access_token'));

// Create a new email object
$email = new CkEmail();

$email->put_Subject('This is a test');
$email->put_Body('This is a test');
$email->put_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);
if ($success != true) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

$success = $mailman->CloseSmtpConnection();
if ($success != true) {
    print 'Connection to SMTP server not closed cleanly.' . "\n";
}

print 'Mail Sent!' . "\n";

?>