You can't really read your mail from Outlook because that is just an email client.
What you need to do is create a lightweight *email client* using PHP, that is capable of reading the mail directly from the server (which is where IMAP comes in).
Then you can use PHP's
mail function to relay that mail wherever you want.
This isn't something you can do by copy/past'ing a few lines of code, you will really have to know how this works and how to configure all of that.
I would recommend Google'ing for some more info on this.