Slack records everything you do in an immuteable audit log. It's used by lots of finance companies as well as government institutions ( who have just as strict

Slack records everything you do in an immuteable audit log. It's used by lots of finance companies as well as government institutions ( who have just as strict if not stricter rules ). Also they have lots of features to help with e-discovery, so not only is everything recorded, but getting your needed data out is quite easy.