KeepKnown

KeepKnown is a filter builder for email that creates richer rules, tests them on real mail, and explains why every message moved. It solves the problem of ineffective native email filters by providing a builder, test bench, and decision log. It sells to IT and operations teams in small to large companies, including founders and executives. It is positioned as a more powerful alternative to native filters, with safe activation modes and per-match explanations.

Key features

• 20 conditions per filter
• 3 logic levels for nested rules
• Preview first before activation
• Explain every match
• Relationship-aware signals
• Nested conditional groups
• Safe activation modes
• Per-match explanations
• Ready-made filter templates