I'm not new to blackberry but I never found out how to do this.
I have gmail, and I set up my email account on my blackberry, but I would like all the messages from the gmail server to be pushed to my blackberry! is this possible?
So you don't want to add the actual Gmail account to your BB? You'd rather have
your Gmail mail forwarded to your @blackberry.net address? If so, you need to
log on to your Gmail account from the desktop and set up the forwarding options
through the preferences there.
If you're trying to just add the Gmail account to your BlackBerry, go to the email
options on the phone and go from there.
You could always punch it up in the browser, work with and review the archived messages there. Unfortunately that's a shortcoming of BIS that I definitely hope they address someday.
If you move your old messages out of the inbox and then back in this may invoke a push to the device. This works on my non Gmail IMAP mail but they will all be filed on the BB with the date and time of the push, not their original date and time.
Posted from my CrackBerry at wapforums.crackberry.com