Mail-in-a-Box From the website: "Take back control of your email with this easy-to-deploy mail server in a box. Mail-in-a-Box lets you become your own mail service provider in a few easy steps. It’s sort of like making your own gmail, but one you control from top to bottom. Technically, Mail-in-a-Box turns a fresh cloud computer into a working mail server. But you don’t need to be a technology expert to set it up. Each Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software. It also includes contacts and calendar synchronization. Integrates Roundcube Webmail, ownCloud and a Control Panel. The box also includes automatic DNS configuration, spam filtering, greylisting, static website hosting, and easy SSL certificate installation. Your box can host mail for multiple users and multiple domain names. It implements modern mail protocols (SPF, DKIM, and DMARC) and the latest security best practices, including opportunistic TLS, strong ciphers, and HSTS. When enabled, DNSSEC (with DANE TLSA) provides a higher level of protection against active attacks. Exchange ActiveSync is also available as a beta feature. Mail-in-a-Box was begun in 2013 by Joshua Tauberer (@JoshData), who has been running his own mail server for 15 years. Mail-in-a-Box is production-ready. This project was inspired in part by the "NSA-proof your email in 2 hours" blog post by Drew Crawford, Sovereign by Alex Payne, and conversations with @shevski, @konklone, and @GregElin. Mail-in-a-Box is similar to iRedMail and Modoboa. Mail-in-a-Box is based on Postfix, Dovecot, Z-Push, Roundcube, ownCloud, Spamassassin, Postgrey,Nginx, @konklone’s nginx config, and more."