If you care about privacy you will be using encryption for your emails, you would not write on a postcard everything you says on an email right? If you are not using encryption to send emails then it is as if you wrote your message on the outside of an envelope and it can easily be read by anyone who knows how to use a packer sniffer, such as Wireshark.
Hushmail has now a competitor, and it is called Countermail. I have been using it for the last few days and their capabilities to keep email private should satisfy most users. If you send email to a person who has a public PGP/OpenPGP-key you can first import his/her key and then the email will be encrypted automatically.
Countermail is easy to use by newbies, and it is compatible with Hushmail users, which it means communications between Hushmail and Countermail will be encrypted, after setting up Hushmail following the instructions given by Countermail FAQ.
If you are sending email to a Hotmail, Yahoo or Gmail address encryption will not work but your message will still be digitally signed with you public key making it impossible for someone to supplant your identity.
Anonymous email provider
Countermail will keep your privacy hiding your computer IP on the email headers and it uses the standard OpenPGP for encryption.
What I liked most of Countermail is that the sign up process is really simple, you do not get asked for personal information, Countermail will not store you name and address after a credit card payment is verified and finished.
There is no backdoor access to CounterMail email accounts, your encrypted email can only be decrypted with your own secret passphrase and private key, if you lose them that is it. Even the calendar at Countermail is encrypted.
I checked the headers while sending myself an email and they appear to be based in Sweden, the IP revealed that location.
Countermail diskless web server is a unique security feature, this will prevent IP-addresses leaking to a hard drive, if someone steals the web server they will find nothing, their mail server uses hard drives to store the encrypted messages, but all messages are stored encrypted.
Anonymous encrypted email service Countermail features
True end-to-end security
Anonymous email header
Easy installation with a certified Java applet
Portable and secure email from any browser
Windows, Linux and MacOS support
Time Delayed sending*
Encrypted file storage/sharing*
Use your own domain name*
Conclusion Countermail review
Countermail diskless unique web servers starting from a CD-ROM are a far superior privacy guarantee than that of Hushmail and other similar services.
Countermail sign up process is very simple and they will not keep user identifiable details. Being compatible with OpenPGP encryption is a plus, as well as hiding the sender computer IP on the headers.
The only downside of Countermail is that there is no free account option with a small inbox, such as the one Hushmail has, but if you are willing to pay for a premium anonymous encrypted email service, Countermail is well worth the money and stands out of the competition.