I agree about Slack's search - it can be slow too. (I actually had so much of a problem with this that I built my own enterprise search tool for my Slack, Trel

I agree about Slack's search - it can be slow too. (I actually had so much of a problem with this that I built my own enterprise search tool for my Slack, Trello and GDrive, and now I'm productizing it - https://getctx.io https://getctx.io )