In the era of informational flood, how do we choose which unsolicited messages are worth our attention? One method is to delegate this duty to corporations and their AI algorithms. Is there another way? Yes, there is. I’ve written a blog post named “How to let senders prioritize your inbox and be happy with that” and a program, Mail Flagger, that facilitates that. Cross-platform, with optional GUI, extensible (via ZeroMQ and via #Python plugins).