PSPoste is the first fully functional email application for the Sony PSP. It currently supports SMTP and POP3 with plans for future support of IMAP. It supports retrieval, storage, compose and display messages from multiple email servers.
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.