I have done these steps but I still not able to set my Entourage as a default email client in MacBook, when I test my setting by sending a word document through email, it is still pop up the built-in Mail client of MacBook, not Entourage.
within Apple Mail. Open Mail.
Go to the Mail menu, open Preferences.
Select the “General” tab.
Click the drop list for “Default email reader”.
Navigate to Entourage.
also, I have done this.
On the menu bar, click “Entourage” (next to the apple).
Then choose “preferences.”
set entourage to by my default . . .”