I have google apps for my domain. I forward a filtered selection of my email to a second account which I access from my phone, and occasionally from other computers.

So I have flip@mydomain.com and flip.mobile@mydomain.com.

If I compose or reply from my phone I want a copy of the messages to be sent to the main mailbox.

I've tried setting (in the web interface) a filter "From = flip.mobile@mydomain.com" but this does not seem to work - the messages do not get copied to my main account.

Are there any fancy IMAP features that I could use? Or other suggestions?