reifman writes: Email innovation often lags other services because the big players (Google, Microsoft, Apple, Yahoo) are cloud client gatekeepers with few incremental profit incentives. Filtered is a new, open source IMAP mail filtering application which provides a platform for experimenting with email. For example, Filter offers Quiet Hours, which can delay email delivery during evenings and weekends (favorite contacts can be excluded), and Secure Folders, which can delete messages from specific people from your NSA-accessible Gmail account and place encrypted versions on your server. Filtered is available now at Github. There's also a detailed installation recipe for Linux.