Get-MgBetaUserMessageDelta
GET /users/{user-id}/messages/delta (beta)
Module: Microsoft.Graph.Beta.Mail
Permissions
Delegated (work or school)
- Mail.Read (least privilege)
- Mail.ReadBasic
Delegated (personal)
- Mail.Read (least privilege)
- Mail.ReadBasic
Application
- Mail.Read (least privilege)
- Mail.ReadBasic.All
Source: Microsoft Graph PowerShell SDK metadata
Confirm property-specific permissions, Entra roles, licensing and ownership requirements in the official documentation. SDK metadata outside the verified sample is not independently certified.