You might be surprised, if you're young enough, to hear that this is exactly how it worked for a very long time. At my first corporate job, and my second one a

You might be surprised, if you're young enough, to hear that this is exactly how it worked for a very long time. At my first corporate job, and my second one as well, all email was sent and received directly from/to each persons individual workstation. There was no concept of centralized email server. (Let alone outsourcing it to some other company, that would have been completely unthinkable.)