Delete mail automatically from apache server after forwarding

I'm forwarding all my mails to gmail.

[thegreatpretender]

I am using gmail to receive all my mails and reply from there. I configured my server to forward all my mails to my gmail account. My problem is that all mails forwarded to my gmail account have copies on the server, I would like them to be deleted automatically as soon as they are forwarded, so, it won't clog the server. Is there a way to do this in cpanel.

Thanks.

[MrSpeed]

I had set up an alias for my e-mail to be sent to Yahoo.
I made sure it was for only 1 address i.e [e-mail]

I then send all other e-mail to ":blackhole:"

I'm pretty sure this does not leave any mail on my server.

[thegreatpretender]

Mrspeed, That is what I'm doing also, but still leaving a copy to my server. What I'm doing right now is using yahoo pop mail to retrieve all mails from the server without leaving a copy there. But there must be better way to do this. I don't use outlook because of the virus getting into my computer when I'm using this email client.

Thanks.