At the bottom left of the Accounts page, click on the plus (+) sign and select Other Email.Click the Accounts button on the left side.If you've already set up Outlook before, go to the Tools menu at the top of your Outlook window.Then, click the option for Other Email under Add An Account.Click the Add Account button to go to the Accounts page.If you've never used Outlook before, you'll be prompted to:.Using Windows? Try Email Setup Outlook 2016 for Windows.