> For the complete documentation index, see [llms.txt](https://docs.realmjoin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.realmjoin.com/automation/runbooks/runbook-references/user/mail/delegate-send-on-behalf.md).

# Delegate Send On Behalf

### Description

Grants or removes SendOnBehalf permissions for a delegate on the user's mailbox. Outputs the resulting SendOnBehalf trustees after applying the change. This allows the delegate to send emails on behalf of the mailbox owner.

### Location

User → Mail → Delegate Send On Behalf

**Full Runbook name**

rjgit-user\_mail\_delegate-send-on-behalf

### Permissions

#### Application permissions

* **Type**: Office 365 Exchange Online
  * Exchange.ManageAsApp

#### RBAC roles

* Exchange administrator

### Parameters

#### UserName

User principal name of the mailbox.

| Property      | Value  |
| ------------- | ------ |
| Required      | true   |
| Default Value |        |
| Type          | String |

#### delegateTo

User principal name of the delegate.

| Property      | Value  |
| ------------- | ------ |
| Required      | true   |
| Default Value |        |
| Type          | String |

#### Remove

If set to true, removes the delegation instead of granting it.

| Property      | Value   |
| ------------- | ------- |
| Required      | false   |
| Default Value | False   |
| Type          | Boolean |

[Back to Runbook Reference overview](/automation/runbooks/runbook-references.md)


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