Once your broadcast is sent, you can track its performance right away. The insights you can view are emails delivered, unsubscribed, click rate, and open rate.

You can view these insights by clicking on Broadcast in the left column, and then clicking on the Broadcast that you want to view.

Please note, at times, open rates can be inaccurate for a number of reasons due to the way inbox providers handle incoming emails. You can read more about this here.