I purchased one of the new MacBook Pro 13 over the weekend. I was doing a clean install of my software and when I tried to install SpamSieve in Apple Mail I received the following error.
Incompatible Plug-ins Disabled
Mail has disabled the following plug-ins:
Contact the makers of these plug-ins for versions that are compatible with Mail 4.4 and Message 4.4.1.
Thanks for the help.