Attaching to an outgoing email while still in the document.
My document applications (WORD, EXCELL, ADOBE, etc.) all have SEND buttons so that I can attach a document to an email while still inside the document. But when I hit a SEND button, instead of bringing up my email client (T-bird) with the document already attached, a message pops up saying my email client is not "configured properly." So everytime I ant to send someone a document I ma forced to close the document application, invoke T'bird, start writing, and then explicitly locate and attach the document. Needless to say, this is productivity killer. Can't find any way to "configure" my email for this purpose. This was never a problem on my PC, but has been since switching to Mac.
Opaite Mbohovái (2)
I'm a Windows tech, not Mac, but the principle here is probably the same.
When you click "Mail" in another application, it asks the operating system to attach the document to an e-mail, and the operating system (OSX), has to know what e-mail program to use to do this. Right now it doesn't know what the default e-mail program is.
Since I'm not a Mac tech, all I can do is refer you to this webpage that will help you set default programs on a Mac.
TB and Windows both support SimpleMAPI, but OSX doesn't support any kind of MAPI, which may explain why it won't work for you even if TB is the default email program.