The Invitation Enrolment Moodle Plugin is a powerful tool for course instructors that simplifies the enrolment process by allowing instructors to send personalized email invitations with a unique token. This plugin offers control over who can use the invitation, tracks past invitations, and allows for resending or revoking invitations. It also supports inviting users even if they are not yet registered on your Moodle LMS site and limiting the lifespan of the invitation.