In this release, we have enhanced the product to use "Banned Emails" list automatically to disallow quick registration using these emails. The product still provides another option to ban emails specifically for quick registration, in case you don't want to ban that emails for registration in general.
In this version, we have removed the redundant "Name" field when a guest creates a reply/thread. The username field was not used anywhere and the user was asked to enter the username during registration. We have also reproduced a bug, which would cause the quick registration workflow not to work via full reply interface but would work via quick reply only.
We have also implemented an option for admins to disallow some email domains to be used during quick registration. Users will get an error message if they try to use an email from that email providers.