How to save sent items in a delegator's mailbox in Exchange Online

Mailboxes in Exchange Online can be set up to be used by other users to read messages in them or send mails using them. The users who are being given these permissions are referred to as delegates. These are typically assigned to assistants to manage their employer's mailboxes in their absence. Access and send permissions can be granted to these delegates for various purposes like sending mails on the original user's behalf, managing their calendars, and more. The permissions that allow these actions are Send As and Send on Behalf permissions.

The following table shows how to save messages sent using the Sent As and Send on Behalf permission by delegates using Exchange Online PowerShell

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