Earlier quoted context omitted.
I've had the opposite experience. I have never had any issue finding information in slack with history going back nearly a decade. The only issue I have with Slack is a people problem where most communication is siloed in private channels and DMs. Email threads are incredibly hard to follow though. The UX is rough and it shows.
I hard disagree. Don't have a conversation? Ask someone who does to forward it. Email lets the user control how to organize conversations. Want to stuff a conversation in a folder? Sure. Use tags religiously? Go for it. Have one big pile and rely on full-text search and metadata queries? You bet. Only the last of these is possible with the vast majority of IM platforms because the medium just doesn't allow for any ot…
Email is really powerful but people simply aren't good at taking advantage of it and it varies by email client. Doing some IT work at a startup made this pretty clear to me. I found Slack was much more intuitive for people.
Both systems rely on the savviness of the users for the best experience and I just think email is losing the UX war. Given how terrible people seem to be at communicating I think it's a pretty important factor to consider.