SMTP - Application password for Office365

Given that you use **PHPMailer** and **PHP Mime Mail Parser**, you can definitely integrate them with OAuth2 for your Microsoft 365 account. Here's how to approach the task using these libraries:

### 1. **Sending Emails with PHPMailer and OAuth2**

Since Microsoft 365 requires OAuth2 for authentication, you need to configure **PHPMailer** to authenticate with OAuth2.

#### Install PHPMailer and Required Dependencies

You probably already have PHPMailer, but if not, install it along with the OAuth2 client:

```bash

composer require phpmailer/phpmailer league/oauth2-client

```

#### OAuth2 Configuration for Sending Emails

Here’s an updated example using **PHPMailer** to send emails using OAuth2:

```php

use PHPMailer\PHPMailer\PHPMailer;

use PHPMailer\PHPMailer\Exception;

use League\OAuth2\Client\Provider\GenericProvider;

require 'vendor/autoload.php';

$oauthProvider = new GenericProvider([

'clientId'                => 'YOUR_CLIENT_ID',

'clientSecret'            => 'YOUR_CLIENT_SECRET',

'redirectUri'             => 'https://yourdomain.com/redirect',

'urlAuthorize'            => 'https://login.microsoftonline.com/YOUR_TENANT_ID/oauth2/v2.0/authorize',

'urlAccessToken'          => 'https://login.microsoftonline.com/YOUR_TENANT_ID/oauth2/v2.0/token',

'urlResourceOwnerDetails' => '',

'scopes'                  => 'https://graph.microsoft.com/.default offline_access'

]);

// Obtain the access token (if already obtained, retrieve from session or storage)

$accessToken = $_SESSION['access_token'] ?? null;

// Initialize PHPMailer

$mail = new PHPMailer(true);

try {

$mail->isSMTP();

$mail->Host = 'smtp.office365.com';

$mail->SMTPAuth = true;

$mail->AuthType = 'XOAUTH2';

$mail->Port = 587;

$mail->SMTPSecure = 'tls';

// Set OAuth details

$mail->setOAuth(new \\PHPMailer\\PHPMailer\\OAuth([

    'provider'       => $oauthProvider,

    'clientId'       => 'YOUR_CLIENT_ID',

    'clientSecret'   => 'YOUR_CLIENT_SECRET',

    'refreshToken'   => 'YOUR_REFRESH_TOKEN',

    'userName'       => 'youremail@yourdomain.com',  // Email associated with your MS365 account

    'accessToken'    => $accessToken

]));

// Recipients

$mail->setFrom('you@example.com', 'Your Name');

$mail->addAddress('recipient@example.com');

// Content

$mail->isHTML(true);

$mail->Subject = 'Subject';

$mail->Body = 'Body of the email';

$mail->send();

echo 'Message has been sent';

} catch (Exception $e) {

echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";

}

```

This setup uses **OAuth2** to authenticate with the Microsoft 365 SMTP server. The access token is retrieved using the OAuth2 client (like `league/oauth2-client`), and PHPMailer uses the token to send the email.

### 2. **Receiving Emails with Microsoft Graph API and PHP Mime Mail Parser**

**Microsoft Graph API** will be used to fetch emails, and **PHP Mime Mail Parser** will parse the email content. Here's how you can fetch and parse emails:

#### Fetching Emails with Microsoft Graph API

First, you need to authenticate using OAuth2 (similar to the setup above for sending emails) and use the Graph API to retrieve messages:

```php

$accessToken = $_SESSION['access_token'];

// Fetch messages using Graph API

$ch = curl_init('https://graph.microsoft.com/v1.0/me/messages');

curl_setopt($ch, CURLOPT_HTTPHEADER, [

'Authorization: Bearer ' . $accessToken,

'Content-Type: application/json'

]);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$result = curl_exec($ch);

curl_close($ch);

$emails = json_decode($result, true);

```

#### Parsing Emails with PHP Mime Mail Parser

Once you have the raw email content, you can pass it to PHP Mime Mail Parser for parsing:

```php

use PhpMimeMailParser\Parser;

$parser = new Parser();

// Assuming $emails['value'][0]['body']['content'] contains the raw email content

$parser->setText($emails['value'][0]['body']['content']);

// Get the subject, body, and attachments

$subject = $parser->getHeader('subject');

$body = $parser->getMessageBody('text'); // You can also use 'html' for HTML emails

$attachments = $parser->getAttachments();

// Display or process the email content

echo "Subject: " . $subject . "\n";

echo "Body: " . $body . "\n";

// Handle attachments

foreach ($attachments as $attachment) {

$attachment->save('/path/to/save/' . $attachment->getFilename());

}

```

### Summary

- **PHPMailer** can send emails with Microsoft 365 via OAuth2, using the setup mentioned above.

- **PHP Mime Mail Parser** will work with the email content fetched from Microsoft Graph API. You can use the Graph API to retrieve emails and then parse them with PHP Mime Mail Parser.

This approach will allow you to integrate both sending and receiving emails into your PHP web app using modern authentication with OAuth2 for Microsoft 365.