Email-based self-registration
From MoodleDocs
With this method, users can create their own accounts. They then receive an email at the address they specified in their account profile to confirm their account.
Note: You are currently viewing documentation for Moodle 3.6. Up-to-date documentation for the latest stable version of Moodle is likely available here: Email-based self-registration.
With this method, users can create their own accounts. They then receive an email at the address they specified in their account profile to confirm their account.