diff --git a/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/ddeboer/imap/src/Server.php b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/ddeboer/imap/src/Server.php
new file mode 100644
index 0000000..7412f00
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/ddeboer/imap/src/Server.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ddeboer\Imap;
+
+use Ddeboer\Imap\Exception\AuthenticationFailedException;
+use Ddeboer\Imap\Exception\ResourceCheckFailureException;
+
+/**
+ * An IMAP server.
+ */
+final class Server implements ServerInterface
+{
+    /**
+     * @var string Internet domain name or bracketed IP address of server
+     */
+    private $hostname;
+
+    /**
+     * @var string TCP port number
+     */
+    private $port;
+
+    /**
+     * @var string Optional flags
+     */
+    private $flags;
+
+    /**
+     * @var array
+     */
+    private $parameters;
+
+    /**
+     * @var int Connection options
+     */
+    private $options;
+
+    /**
+     * @var int Retries number
+     */
+    private $retries;
+
+    /**
+     * Constructor.
+     *
+     * @param string $hostname   Internet domain name or bracketed IP address
+     *                           of server
+     * @param string $port       TCP port number
+     * @param string $flags      Optional flags
+     * @param array  $parameters Connection parameters
+     * @param int    $options    Connection options
+     * @param int    $retries    Retries number
+     */
+    public function __construct(
+        string $hostname,
+        string $port = '993',
+        string $flags = '/imap/ssl/validate-cert',
+        array $parameters = [],
+        int $options = 0,
+        int $retries = 1
+    ) {
+        if (!\function_exists('imap_open')) {
+            throw new \RuntimeException('IMAP extension must be enabled');
+        }
+
+        $this->hostname   = $hostname;
+        $this->port       = $port;
+        $this->flags      = '' !== $flags ? '/' . \ltrim($flags, '/') : '';
+        $this->parameters = $parameters;
+        $this->options    = $options;
+        $this->retries    = $retries;
+    }
+
+    /**
+     * Authenticate connection.
+     *
+     * @param string $username Username
+     * @param string $password Password
+     *
+     * @throws AuthenticationFailedException
+     */
+    public function authenticate(string $username, string $password): ConnectionInterface
+    {
+        $errorMessage = null;
+        $errorNumber  = 0;
+        \set_error_handler(static function ($nr, $message) use (&$errorMessage, &$errorNumber): bool {
+            $errorMessage = $message;
+            $errorNumber = $nr;
+
+            return true;
+        });
+
+        $resource = \imap_open(
+            $this->getServerString(),
+            $username,
+            $password,
+            $this->options,
+            $this->retries,
+            $this->parameters
+        );
+
+        \restore_error_handler();
+
+        if (false === $resource || null !== $errorMessage) {
+            throw new AuthenticationFailedException(\sprintf(
+                'Authentication failed for user "%s"%s',
+                $username,
+                null !== $errorMessage ? ': ' . $errorMessage : ''
+            ), $errorNumber);
+        }
+
+        $check = \imap_check($resource);
+
+        if (false === $check) {
+            throw new ResourceCheckFailureException('Resource check failure');
+        }
+
+        $mailbox       = $check->Mailbox;
+        $connection    = $mailbox;
+        $curlyPosition = \strpos($mailbox, '}');
+        if (false !== $curlyPosition) {
+            $connection = \substr($mailbox, 0, $curlyPosition + 1);
+        }
+
+        // These are necessary to get rid of PHP throwing IMAP errors
+        \imap_errors();
+        \imap_alerts();
+
+        return new Connection(new ImapResource($resource), $connection);
+    }
+
+    /**
+     * Glues hostname, port and flags and returns result.
+     */
+    private function getServerString(): string
+    {
+        return \sprintf(
+            '{%s%s%s}',
+            $this->hostname,
+            '' !== $this->port ? ':' . $this->port : '',
+            $this->flags
+        );
+    }
+}