@Saxophone3784 it's a legitimate idea assuming the mail queue never gets written to disk. Though even with it getting written to disk as cleartext there's some legitimacy to the idea.

People will tell you it's bad because it's imperfect. But in reality doing this would reduce the time window which emails exist as cleartext to virtually zero and if anyone were to pull your partition from like a hypervisor level they wouldn't be able to grab your existing stuff.

No one talks about this because it's flawed against many types of attacks, but removing low hanging fruit is valuable.