The analysis here is so absolutist and extremist it is ridiculous.
Many business have auto-delete for the simple business purpose - when someone hacks your email (which will happen somewhere in a large business) - why do you need to keep all that crap around forever? And yes, people email payroll details, passwords, logins and the list goes on - stop with the preaching about how to email securely.
So you auto-delete, which reduces the blast radius. In most cases folks are not looking at emails past 3 years old.
Many business have auto-delete for the simple business purpose - when someone hacks your email (which will happen somewhere in a large business) - why do you need to keep all that crap around forever? And yes, people email payroll details, passwords, logins and the list goes on - stop with the preaching about how to email securely.
So you auto-delete, which reduces the blast radius. In most cases folks are not looking at emails past 3 years old.