This sounds more like a problem with your young companies processes, not a problem with slack or email.
Maybe you should think about a formal method of documenting important decisions for your company instead of relying on a chat log.
"Hey, I just purchased 20k of widgets"
"What? Why?! We can't afford that! We decided to discontinue those widgets month ago! Didn't you scroll through the chat logs before making that purchase order??!"
Maybe you should think about a formal method of documenting important decisions for your company instead of relying on a chat log.
"Hey, I just purchased 20k of widgets"
"What? Why?! We can't afford that! We decided to discontinue those widgets month ago! Didn't you scroll through the chat logs before making that purchase order??!"
Good luck.