In case you want people to register to the platform with their corporate email, you can enter one or more corporate email domains to facilitate the registration of your organization’s collaborators.
Keep in mind that everyone with an email within the domains entered will be able to create their users within your platform.
To add domains, get into Admin Panel > Platform > Registration Options.
You can also delete previously loaded domains, but that doesn’t delete the users of already registered domain.
Once you're done, remember to Save changes.
For other registration options, visit this article.