Email redirects and alias

[#1]

Hi I need a bit of Email help please
I have mail from 3 accounts redirected to my main plus net account which i then successfully manage across a few devices using imap with offline storage on my main pc in Thunderbird. I'd like to also be able to view this consolidated mail in outlook.com but that only allows me to add pop3 accounts so when i link my account in outlook.com all the main is immediately marked as read.
Is there a way that I can keep my mail in my main account but forward on a copy of each mail received to a new address in outlook.com? I know there are other webamial solutions including plusnet's but my address book and skydrive are the reason i want to use outlook.com for this purpose.
thanks

[#2]

Message rules can't be entered on the server but they can in Thunderbird. You could add a rule there to copy messages on receipt to a different mailbox, then access that one from outlook.com.

[#3]

works a treat - many thanks