> One of the main differentiators between paid and unpaid slack is message retention. To my knowledge, I don't think the XMPP and IRC were used by anyone to ove

> One of the main differentiators between paid and unpaid slack is message retention. To my knowledge, I don't think the XMPP and IRC were used by anyone to overcome this limit but I'm pretty sure it's been done using their API. If I understand you correctly, you're saying that you don't know about any message retention facilities for IRC. irclogger and logbot do that.