What?!  Yes, that's right.  What about engaging in psychotherapy in a virtual world environment such as Second Life?  Therapists and consumers are already meeting for therapy sessions in virtual world settings.  My initial impression is that this could be an incredible offering for many people who might not oridnarily seek out therapy in the "real world."  Secure and encrypted virtual worlds (hint to Second Life...) would meet best practice standards in the field of pyschotherapy. At any rate, it is another expansion of the use of technology in mental health!  I will be interested in watching this method of therapy delivery emerge!

The possibility of your email exchange being intercepted is slim but why take unnecessary risks with your confidential information?  If you are communicating with your counselor through email exchanges and the information shared is like therapy- and not just a housekeeping issue, like a change of appointment time, you might consider using an encrypted email service.  Encrypted email gives you a level of privacy far beyond standard email. Encryption does not guarantee privacy, but you have less risk of private information being intercepted. Suggest to your counselor that you would feel more comfortable in the future with encrypted communication.