Here's what the Feds can and cannot read:
All email that is not encrypted can be read. That would include email you sent to or got from a yahoo.com account or a hotmail account or any other regular email account.
If you selected the encryption option, and sent encrypted email to someone else using PGP, elitefitness.com email, hushmail, or cyber-rights, that mail could not be read unless it was decrypted first.
To decrypt that email, the Feds need the passphrase you used when you created the account.
Hushmail does not have that passphrase if you are using the Java applet version of their software. The EliteFitness.com email system here, ONLY uses the Java applet version, so neither hushmail (nor elite) has access to your passphrase.
If you are using a hushmail.com email address, there are two ways to get your email. The java applet way like we use here, or a more traditional method that does not require the applet.
The advantage of this second method, which is not available to EF members, is that it is faster to login and check your mail. The disadvange is that hush gains access to your passphrase in the process. Hush has always posted this distinction to their users. And EF does not make this second option available to you.
So, long post made short, you are much better off to use an elitefitness.com account and send email to others using PGP, hushmail, or cyber-rights than you are without it. If your email was sent or received using PGP encryption, then it cannot be read when it is turned over pursuant to a subpoena without your pass phrase.