Mailgraph is a very simple mail statistics RRDtool
frontend for Postfix that produces daily, weekly,
monthly, and yearly graphs of received/sent and
bounced/rejected mail.
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.