If you have several different email address that you use on your BlackBerry you might have realized that the BlackBerry email application is using pre-defined standard email address. While it is possible to change the sender email address for each email you send, this is inconvenient and time-consuming.

If you want to change the default email address you can do this in the Options menu. Simply go to

Options > Advanced Options > Default Services  

Now you can set the default service for email as well as the default email for the calendar application.