LMS365 utilizes Azure Active Directory for all External Users invited to the SharePoint LMS365 Site Collection(s), it is required to turn on external sharing on SharePoint. For more information follow this link.
Multi-factor authentication (MFA)
To increase security LMS365 fully supports MFA and can be enabled without any issues. For more information about setting up MFA for your Office 365 Tenant follow this link.
LMS365 Email Notifications are sent using the Office 365 SMTP Service and requires this service to be enabled. For more information follow this link.