This thread is trying to answer question "Is there a way to create a test where I test the registration flow and where I need to click on a confirmation link received in the user's inbox?"
There is this approach for gmail https://www.npmjs.com/package/gmail-tester
To create an infinite amount of users: https://gmail.googleblog.com/2008/03/2-hidden-ways-to-get-more-from-your.html?m=1
Rayrun is a community for QA engineers. I am constantly looking for new ways to add value to people learning Playwright and other browser automation frameworks. If you have feedback, email email@example.com.