As a LinkedIn Page super admin, you can control which email domains (such as @yourcompany.com) can be used to verify members’ association with your organization. You must include all domains that your employees are likely to use for workplace verification.
When you add a domain, members of your organization can verify their workplace or education association by confirming that they have an email address with the approved domain (such as name@yourcompany.com). Once verified, the verification will be displayed on the member’s LinkedIn profile in the About this profile section. You can add email domains only on desktop.