Click on File at the top left-hand corner.
Click the option for Add Account.
Enter the email address that you wish to setup. You will then need to open up the Advanced options and tick the box for Let me set up my account manually, and click Connect.
Next, choose the option for IMAP.
Enter the following server settings displayed in the image below, and click Connect.
You will then be prompted to enter your email password.
Click OK to complete the setup.