I Googled and tried finding it here on the forum, but the answers I find are related to certain plugins.
Is it possible to add some kind of pop-up message to the default registration page to tell the user that they need to check their email? I know that at the bottom of the page there’s a message mentioning it, but some people just ignore that. Myself, I didn’t read it while I was testing the website.
I just wanted something similar to this where the user can then close the window: