I almost don’t even bother reading my email anymore because almost all work happens over slack and zoom. Do they have the same retention requirements for all other non-email communication channels?
During your Company Ethics training (when you learn about insider training and not bribing government officials) they also tell you "never comment on the legality of something unless you're a lawyer. But if you do, say it in a meeting and not digitally."
If there's accountability on the line, bosses want it in an email so they can point the finger at someone when they try to slither their way out of a fuckup.