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: This documentation is for Moodle 2.7. For up-to-date documentation see 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.