Turn on automatic forwarding in Outlook - Microsoft Support
At the top of the page, select Settings . Select Mail > Forwarding. Toggle the Enable forwarding switch, enter the forwarding email address, and click Save. Note: If you want a copy of the original message to remain in your mailbox, select Keep a copy of forwarded messages.
Turn on or off automatic forwarding in Outlook.com
In Outlook.com, select Settings . Select Mail > Forwarding. Note: If two-step verification is enabled, you will be prompted again to verify your identity. To turn on forwarding, select Enable forwarding, enter the forwarding email address, and select Save.
Use rules to automatically forward messages - Microsoft Support
You can use inbox rules to automatically forward or redirect messages sent to your mailbox to another account. Messages that are forwarded will appear to be forwarded from you. Messages that are redirected will appear to come from the original sender. Select a tab option below for the version of Outlook you're using.