A former coworker of mine has made a lot of contributions to a project called sovereign: <a href="https:&#x2F;&#x2F;github.com&#x2F;sovereign&#x2F;sovereign" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;sovereign&#x2F;sovereign</a><p>&gt; &quot;Sovereign is a set of Ansible playbooks that you can use to build and maintain your own personal cloud based entirely on open source software, so you’re in control.&quot;<p>It makes use of all the techniques described in the article for e-mail, including dovecot&#x2F;postfix, DKIM, encfs.<p>I decided to give it a try a few weeks ago. I went and bought a $10&#x2F;month linode instance and a domain name. By the end of the day I could send and receive e-mail. letsencrypt was a big help here, because it allowed me to get TLS for free.<p>I always assumed that hosting your own e-mail was virtually impossible but my friend has been hosting his personal e-mail and the e-mail for his company for around two years now, with linode and sovereign. He says that the server requires maintenance about once every six months.<p>This doesn&#x27;t really protect you from the three-letter orgs, as other commenters here have mentioned. But it does put you in control of your own data, and prevents analytics of your own inbox by corporations like google.