The need (desire?) to have an invite link that can be used regardless of the user email address comes up pretty frequently. Use cases include
- presenting a URL at a conference that will allow people to sign up to a closed community, optionally adding them to a group
- sending out an email to a Huge List without generating thousands of unique keys and doing a mail merge.
Sure, having a URL that will allow anyone who can find it gain access to the community is less secure than email-bound invitations, it’s often well worth the pain avoided.