Add Shared Mailbox

Create a shared mailbox.

Description

This script creates a shared mailbox in Exchange Online and configures various settings such as delegation, auto-mapping, and message copy options. Also if specified, it disables the associated EntraID user account.

Location

Organization → Mail → Add Shared Mailbox

Permissions

Application permissions

• Type: Office 365 Exchange Online

  • Exchange.ManageAsApp

RBAC roles

• Exchange administrator

Parameters

MailboxName

The alias (mailbox name) for the shared mailbox.

Property	Value
Required	true
Default Value
Type	String

DisplayName

The display name for the shared mailbox.

Property	Value
Required	false
Default Value
Type	String

DomainName

The domain name to be used for the primary SMTP address of the shared mailbox. If not specified, the default domain will be used.

Property	Value
Required	false
Default Value
Type	String

Language

The language/locale for the shared mailbox. This setting affects folder names like "Inbox". Default is "en-US".

Property	Value
Required	false
Default Value	en-US
Type	String

DelegateTo

The user to delegate access to the shared mailbox.

Property	Value
Required	false
Default Value
Type	String

AutoMapping

If set to true, the shared mailbox will be automatically mapped in Outlook for the delegate user.

Property	Value
Required	false
Default Value	False
Type	Boolean

MessageCopyForSentAsEnabled

If set to true, a copy of sent emails will be saved in the shared mailbox's Sent Items folder when sent as the shared mailbox.

Property	Value
Required	false
Default Value	True
Type	Boolean

MessageCopyForSendOnBehalfEnabled

If set to true, a copy of sent emails will be saved in the shared mailbox's Sent Items folder when sent on behalf of the shared mailbox.

Property	Value
Required	false
Default Value	True
Type	Boolean

DisableUser

If set to true, the associated EntraID user account will be disabled.

Property	Value
Required	false
Default Value	True
Type	Boolean

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