is it in any way possible that you can register multiple users using the same email address? I know it is not possible by default for safety reasons but within our company only marketing would be using the blog with 5-6 users and not everyone has their own company email so we wanted to use a generic firstname.lastname@example.org for every user. And there will not be a public registration for anyone only creation of users by admin.
I heard there is a plugin called "Allow multiple accounts" but seems to be deprecated since Wordporess 2.8. So any ideas how to achieve this?