Chat systems are meant to be ephemeral. The conversation goes away after a time. Logging makes history discoverable, but nothing yet has been able to provide an actionable summary of the transcript.<p>Slack is getting toward it with its reactions feature, which could be employed consciously by users to mark lines for inclusion in some kind of daily&#x2F;weekly summary log sent via email. IRC lacks this facility since it lacks a unique identifier for each line. It might be possible to repeat the line to a bot, though, but that seems messy and allows for significant duplication or alteration of what was said.<p>I personally use irccloud.com for persistent IRC, but mostly for push notifications to my phone.