On page 204 of the book (chapter 15 for Kindle readers), the email service Privacy Harbor is listed as one of the recommended secure mail services. Unfortunately, the service closed down and is no longer available.
However, I still recommend:
HushMail which has been in business since 1999, uses strong encryption and is considered a [...]
Protect your webmail account – especially when using public WiFi connections (airports, cafes, etc) – by enabling a secure connection (SSL) in your webmail settings. You can confirm a secure connection is enabled for your webmail by noting whether the web address starts with HTTPS (note the ‘s’) as in https://webmail.example.com/
Here are the instructions and screenshots for ‘Yahoo! [...]
Google starts to roll out extra verification security measures for its accounts, much like those used by many banks.Google Recommends 2-Step Process To Protect Your Account [News]www.makeuseof.comMost savvy Internet users probably have at one at least Google account – mainly because Google, for good or bad, crosses paths with so many other websites that it's [...]