upgrade_mailer.py is a script that sends email or Jabber notifications when updates on your APT or YUM based system are available. This includes Debian, Ubuntu, Fedora, CentOS, and Red Hat. It can use TLS if your SMTP supports that.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.