I just configured my Yahoo mail account on a Mac OS X Mail and ever message that I send I will want to keep on the folder of Yahoo Mail Sent is this possible ?

Please Help, Thank You.

How to keep copy of sent e-mails on my yahoo sent folder if I used Mac OS X Mail software to send the email?

I use a blackberry pearl and yahoo. Every time I send an email from my blackberry, a copy of it shows in my “sent” folder in Yahoo. I don’t want any of the messages to save there. How do I get it to stop?
If I send mail through my regular account (on my laptop, not my blackberry) it doesn’t save a copy in the sent folder. Only when I send it using the blackberry….