Mail.app won’t reply to some emails sent from aol.com

The other day I received an email from an aol member. When I tried to reply to their note, I found that I couldn’t! Hitting the reply button or selecting “reply” from the menu did not work.

I found the temporary fix here:

“When viewing the message, press [ Apple + Option + P ] or choose [ View -> Message -> Plain Text Alternative ]. You should then be able to reply / forward normally. ”