[Evolution] How do I view an unencrypted signed message?

["Stephen Rees" <Stephen Rees fresno gov>]

When opening an unencrypted message that has been signed all I can get
it to show me is a red, yellow, or green box with the evaluation of the
signature (invalid, untrusted, or valid signature). How can I view the
actual message?
Evolution 2.10.0 on Mandriva 2007.1

Thanks,
-Stephen