Exchange Admin Center — Send As & Permission Management

Primary Tasks

Bulk Permission Management: Select multiple shared mailboxes and assign Send As permission to a user or group
Room Booking Setup: Configure calendar delegation and booking permissions for a room mailbox
Create Shared Mailbox: Create a new shared mailbox and assign initial permissions
Temporary Access: Grant time-limited Full Access permission with an expiry date
Test Permissions: Use the "Test Send As" feature to verify permission functionality
Delegated View: Check what permissions a specific user has across all mailboxes
Audit Report: Generate a comprehensive audit report showing all permissions with timestamps and actors

🔴 Send As

Send email appearing to come directly from the mailbox. Requires mailbox to exist in system.

🔵 Send on Behalf

Send email showing "on behalf of" in the sender field. More transparent delegation.

📧 Full Access

Complete read and manage access to mailbox. User can open mailbox in Outlook.

📅 Calendar Delegation

Manage calendar, book meetings, and accept/decline invitations for room mailboxes.

⚠️ Important Notes

Permission Inheritance: Users in groups automatically inherit group permissions
Conflict Detection: Send As requires the user/group to have a mailbox
Room Mailboxes: Require special calendar delegation permissions for booking
Temporary Access: Expired permissions are marked and should be removed
Audit Trail: All permission changes are logged with actor and timestamp

Generated on:

Mailbox	Type	Delegate	Permissions	Assignment	Granted By	Granted On	Expires

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