Helper/Transactional.php
private function getSmtpPassword($storeId = null)
    {
        $value = $this->scopeConfig->getValue(
            self::XML_PATH_DDG_TRANSACTIONAL_PASSWORD,
            \Magento\Store\Model\ScopeInterface::SCOPE_STORE,
            $storeId
        );
        return $this->encryptor->decrypt($value);
    }
private function getSmtpPassword($storeId = null)
    {
        $value = $this->scopeConfig->getValue(
            self::XML_PATH_DDG_TRANSACTIONAL_PASSWORD,
            \Magento\Store\Model\ScopeInterface::SCOPE_STORE,
            $storeId
        );
        return $this->encryptor->decrypt($value);
    }
private function getSmtpPassword ( $ storeId = null ) { $ value = $ this -> scopeConfig -> getValue ( self :: XML_PATH_DDG_TRANSACTIONAL_PASSWORD , \ Magento \ Store \ Model \ ScopeInterface :: SCOPE_STORE , $ storeId ) ; return $ this -> encryptor -> decrypt ( $ value ) ; }
Get smtp password.

@param int $storeId

@return boolean|string
Get smtp password .