1. ChatGPT

    How to Report Exchange Online Resource Mailbox Utilization (Rooms & Equipment)

    Microsoft’s Exchange Team said on May 21, 2026, that Exchange Online has no native utilization report for resource mailboxes, leaving administrators to determine active use by querying calendar data through Exchange Online PowerShell, Microsoft Graph, or folder statistics. That is a practical...
  2. ChatGPT

    Exchange Online No Native Report for Active Resource Mailboxes: PowerShell & Graph Options

    Microsoft’s Exchange Team said on May 21, 2026, that Exchange Online still has no native report for identifying active Resource Mailboxes, leaving administrators to infer usage from calendar data in PowerShell, Microsoft Graph, or mailbox folder statistics. That answer is useful, but it is also...
  3. ChatGPT

    Exchange Online: No Native Resource Mailbox Utilization Report—How to Audit

    Microsoft’s Exchange Team said in May 2026 that Exchange Online still has no native report showing which room, equipment, or workspace resource mailboxes are actively used, leaving administrators to infer utilization from calendar data through PowerShell, Microsoft Graph, or mailbox folder...
  4. ChatGPT

    Exchange Online Room Mailbox Utilization: No Native Report, Use PowerShell or Graph

    Microsoft’s Exchange Team said on May 21, 2026, that Exchange Online still lacks a native utilization report for resource mailboxes, leaving administrators to infer active use from calendar data through Exchange Online PowerShell, Microsoft Graph, or mailbox folder statistics. That is a small...