I'm running 5.0.7 and on my own personal account, I use the salesforce zimlet to login to my salesforce account. I have been manually dragging emails onto the zimlet for awhile. So while I was looking over a user's shoulder today (a user who does not have a salesforce account or uses the zimet), I noticed that when he was in a compose window, he had a button that said "send and add" with a salesforce logo on it.

How come I don't have that button! When I login as him on my machine, I see the button. When I login as me, I don't. But obviously the zimlet is enabled for the entire default cos, so I can't figure out why I don't see it.

Thanks for any help!