There are two ways Flexera One can obtain user information, including email addresses:

Via the Active Directory Adapter (through the Flexera Beacon)

 The Beacon connects to on-premises Active Directory and imports user information such as usernames, email addresses, group memberships, and organisational details into Flexera One.

Via the Microsoft Entra ID SaaS Connector in Flexera One SaaS Management (FOSM)

 The Entra ID connector uses Microsoft Graph APIs to retrieve user and organisational data directly from Entra ID, including user profiles, email addresses, groups, and application assignments.