What are the best ways to measure the effectiveness of website popups?

To measure how well your website popups perform, start by tracking conversion rates, do visitors actually take the action you’re aiming for, like signing up or buying? Check the click-through rate to see if people are engaging with your call-to-action. Keep an eye on the bounce rate too; if users leave right after the popup, it might be hurting your flow. Lastly, gather direct feedback—nothing beats hearing from real users.