Forwarding Outlook to other email platforms Say you use Outlook, but you prefer to have another email as your primary.The chosen email address will receive an email. Note that you can only enter one email address at a time. In the window that pops up, enter the email address you want to forward emails to. At the top of the page under the Forwarding subheading, click Add a forwarding address.See Rules and tools to filter junk mail: Sue's Method for more information. Then add a second rule to process all mail (don't select a condition) and list it last in the Rules wizard.