How to Set Up Encrypted Mail on Mac OS X
Subject:   A flaw in the keychain process?
Date:   2004-02-25 14:28:42
From:   nxnw
Response to: A flaw in the keychain process?

"As a measure of security you should lock the keychain again if you leave the computer unattended (if that was ultimately your concern)"

That does not work.

The original poster is correct. Even if you lock your keychain, a message remains unencrypted (even if you close the message, even if you close the message browser) until you quit mail.

I think this is a design flaw.