- Secret app key - If you've just created this app, or generated a new secret key, it will be displayed here.
- Invite only - Check this and registering a new user for this app will require an invitation.
- Email webhook url - If you'd like to handle e-mails on your own domain, follow the (Quickstart guide for sending emails)[https://docs.userkit.io/v1.0/docs/quickstart-sending-emails-from-custom-domain]. Leaving this blank will send all account related emails through a userkit.io email address.