Hello, Thanks for giving Zulip a try! There are a few steps you need to take to ensure Zulip works with your MIT Zephyr account. 1) Create a password and activate your account: <{{ activate_url }}> 2) Follow the instructions on to setup the Zephyr mirroring system. Feel free to send us a message via the Feedback button under the gear tab within the app if you have any questions or encounter any problems. Cheers, All of us here at Zulip