If You Aren’t Secretary of State, It’s Actually Really Smart to Run Your Own Email Server – Slate Magazine
Yes, there are risks to self-hosting. However with a fairly minimal server setup, a mostly default configuration, malware scanning, two-factor authentication, and automatic security updates—all of which are freely available—as well as a little vigilance on what links in email you click, most servers can be secured against all but the most heavily resourced bad actors (namely, those groups who have access to the black market of unpatched security exploits). Furthermore, as a person hosting your own server, you can still enjoy a significant network affect from companies that do have the resources to put more eyes on a problem. For example, the open-source tools that Google relies on have benefited from its research, in the form of bug fixes and patches. These fixes, in turn, end up on non-Google servers the world over. And it isn’t just Google working on these tools—other researchers provide patches that end up making everyone, even Google, more secure. This approach takes advantage of the network affect in the bug-fixing ecosystem, letting the average self-hoster benefit from thousands of hours of labor from smart tech experts throughout the world.