Wrong you open your email and find an attachment. To open it you click on open attachment/Click to choose what application you want to use/find the application(ex. WMP) and click on it to open/Then you click on WMP/ click open and then wait for the attachment to download in preview and finally it runs. And you have to do this every single time you open an attachment.
On a PC you click download attachment and WMP opens and runs the attachment. That is pretty clear cut difference to me.
Either I have the only Mac that doesn’t work right or you guys all of special machines.