<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <!-- for override magento default Transport class with our custom module model-->
    <preference for="\Magento\Framework\Mail\Transport" type="Pasticcinformatici\MageSMTP\Model\Transport"/>
</config>