Hi @hamtagsly,
the plugin will check email addresses automatically. We have a database of 150k domains that are used for temporary email. The plugin will not allow users to sign up using addresses at these domains.
Additionally, you can manually domains (one per line) in the ‘black list’ field as seen in your screenshot. Each of the domains will be treated as blocked.
Does this answer your question?
And thanks for asking, we will try to explain this better in the next plugin version.
Thank you so much for the clarification.