diff --git a/plugins/change-password/drivers/ispconfig.php b/plugins/change-password/drivers/ispconfig.php
new file mode 100644
index 000000000..1cfae2681
--- /dev/null
+++ b/plugins/change-password/drivers/ispconfig.php
@@ -0,0 +1,104 @@
+<?php
+
+class ChangePasswordDriverISPConfig
+{
+	const
+		NAME        = 'ISPConfig',
+		DESCRIPTION = 'Change passwords in ISPConfig.';
+
+	/**
+	 * @var \RainLoop\Config\Plugin
+	 */
+	private $oConfig = null;
+
+	/**
+	 * @var \MailSo\Log\Logger
+	 */
+	private $oLogger = null;
+
+	function __construct(\RainLoop\Config\Plugin $oConfig, \MailSo\Log\Logger $oLogger)
+	{
+		$this->oConfig = $oConfig;
+		$this->oLogger = $oLogger;
+	}
+
+	public static function isSupported() : bool
+	{
+		return \class_exists('PDO', false)
+			// The PHP extension PDO (mysql) must be installed to use this plugin
+			&& \in_array('mysql', \PDO::getAvailableDrivers());
+	}
+
+	public static function configMapping() : array
+	{
+		return array(
+			\RainLoop\Plugins\Property::NewInstance('ispconfig_dsn')->SetLabel('ISPConfig PDO dsn')
+				->SetDefaultValue('mysql:host=localhost;dbname=dbispconfig;charset=utf8'),
+			\RainLoop\Plugins\Property::NewInstance('ispconfig_user')->SetLabel('User'),
+			\RainLoop\Plugins\Property::NewInstance('ispconfig_password')->SetLabel('Password')
+				->SetType(\RainLoop\Enumerations\PluginPropertyType::PASSWORD),
+			\RainLoop\Plugins\Property::NewInstance('ispconfig_allowed_emails')->SetLabel('Allowed emails')
+				->SetType(\RainLoop\Enumerations\PluginPropertyType::STRING_TEXT)
+				->SetDescription('Allowed emails, space as delimiter, wildcard supported. Example: user1@domain1.net user2@domain1.net *@domain2.net')
+				->SetDefaultValue('*')
+		);
+	}
+
+	public function ChangePassword(\RainLoop\Model\Account $oAccount, string $sPrevPassword, string $sNewPassword) : bool
+	{
+		if (!\RainLoop\Plugins\Helper::ValidateWildcardValues($oAccount->Email(), $this->oConfig->Get('plugin', 'ispconfig_allowed_emails', ''))) {
+			return false;
+		}
+
+		try
+		{
+			if ($this->oLogger) {
+				$this->oLogger->Write('ISPConfig: Try to change password for '.$oAccount->Email());
+			}
+
+			$oPdo = new \PDO(
+				$this->oConfig->Get('plugin', 'ispconfig_dsn', ''),
+				$this->oConfig->Get('plugin', 'ispconfig_user', ''),
+				$this->oConfig->Get('plugin', 'ispconfig_password', ''),
+				array(
+					\PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION
+				)
+			);
+
+			$oStmt = $oPdo->prepare('SELECT password, mailuser_id FROM mail_user WHERE login = ? LIMIT 1');
+			if ($oStmt->execute(array($oAccount->IncLogin()))) {
+				$aFetchResult = $oStmt->fetch(\PDO::FETCH_ASSOC);
+				if (!empty($aFetchResult['mailuser_id'])) {
+					$sDbPassword = $aFetchResult['password'];
+					$sDbSalt = \substr($sDbPassword, 0, \strrpos($sDbPassword, '$'));
+					if (\crypt($sPrevPassword, $sDbSalt) === $sDbPassword) {
+						$oStmt = $oPdo->prepare('UPDATE mail_user SET password = ? WHERE mailuser_id = ?');
+						return !!$oStmt->execute(array(
+							$this->cryptPassword($sNewPassword),
+							$aFetchResult['mailuser_id']
+						));
+					}
+				}
+			}
+		}
+		catch (\Exception $oException)
+		{
+			if ($this->oLogger) {
+				$this->oLogger->WriteException($oException);
+			}
+		}
+		return false;
+	}
+
+	private function cryptPassword(string $sPassword) : string
+	{
+		if (\defined('CRYPT_SHA512') && CRYPT_SHA512) {
+			$sSalt = '$6$rounds=5000$' . \bin2hex(\random_bytes(8)) . '$';
+		} elseif (\defined('CRYPT_SHA256') && CRYPT_SHA256) {
+			$sSalt = '$5$rounds=5000$' . \bin2hex(\random_bytes(8)) . '$';
+		} else {
+			$sSalt = '$1$' . \bin2hex(\random_bytes(6)) . '$';
+		}
+		return \crypt($sPassword, $sSalt);
+	}
+}