Heads up! This blog post hasn't been updated in over 2 years. CodePen is an ever changing place, so if this post references features, you're probably better off checking the docs. Get in touch with support if you have further questions.
Who gets pumped about clickin' links in emails?! This update is for YOU! PARTY. OK there is no way to make this exciting, but it is an improvement.
We just released an update that requires new users (and anyone changing their email address) to verify it by clicking the link in the email that you get sent. Hopefully it's not an enormous burden on you.
The upside is that it goes a long way in preventing spam and other various bad behavior on CodePen. And it allows us to open up some things we would have been hesitant to before. No hard promises, but things like free trials of PRO and logged-out Debug View.
Check out the documentation on how it all works, why we do it, what is restricted, and all that.