...I still don't get it why corporations are STUPID enough not to implement a system where old emails get deleted (in an unrecoverable way) after something like

...I still don't get it why corporations are STUPID enough not to implement a system where old emails get deleted (in an unrecoverable way) after something like a week (ok, maybe they would have to invent their own messaging protocol with DRM-like features baked in, but still, it would totally worth the effort considering the legal risk of emails) ...or for god's sake, do "important" communication by voice-calls if not just face-to-face private meetings, but just don't leave this electronic "paper trail" that can turn back to legally "blow you up" at any time!