Select Options | Account Settings | Account Actions | Add Mail Account. Otherwise, click on Display the Thunderbird Menu button. If you have no other accounts configured, you will be prompted to configure a new account. Configure Access to the Campus Directory (Whitepages).Note: These instructions assume you are running the latest version of Thunderbird. Which means you will only have access to your mail. These instructions will instead configure Thunderbird via IMAP protocol. Important: At this time, we have not found a reliable Exchange/Active Sync plug-in which allows Thunderbird to connect to your Office 365 account via this protocol. This document explains how to connect to the Office 365 service.