.NET

<system.net>
  <mailSetting>
    <smtp from="john.doe@example.org">
      <network defaultCredetials="false"
        host="app.debugmail.io"
        port="<project port>"
        userName="<project login>"
        password="<project password>"
        enableSsl="false" />
    </smtp>
  </mailSetting>
</system.net>