Endpoint Encryption

When I receive encrypted email from my hushmail.com account (encrypted to my public key), I only see cyphertext in the body of the email. Yet if I copy the message body to my clipboard, I am able to decrpt the msg using "Current Window | Decrypt & Verify" from the task bar icon.

Have you checked that a PGP Messaging service / policy is defined for the Hushmail account? If it is defined then you might want to try the suggestions in the section titled, Troubleshooting PGP Messaging Services, page 100, of the User Guide.