If you’ve never embarrassed yourself by clicking Send All on what should’ve been a private email message, congratulations! You’re a rare breed. But don’t twist your arm patting yourself on the back. The security, or lack of security, in the overall email communication system means that you might as well have made that mistake. Anybody who’s interested in snooping your email can probably catch it as it bounces around between servers. Even when your webmail provider protects mail using HTTPS, that provider still has access. To communicate via email while protecting your privacy, you need a service that encrypts every trace of your email communication. We’ve rounded up a varied collection of such services, some of which don’t cost a penny.