I'm looking for a J4-compatible extension to replace this admirable beauty from Michael Richey:
https://extensions.joomla.org/extension ... striction/
I used it to block registrations which use specific email domains and specific email addresses on allowed email domains. Also used it to redirect registrations using certain email domains to a specific user-group. Worked brilliantly on my J3 site pre-upgrade but it isn't compatible with J4

Can anyone recommend an alternative, please?
Many thanks in advance.