This will not error if a record already exists for the specified User.
| Name | Type | Optional | ByRef | Description |
|---|---|---|---|---|
| mailboxItemPk | Integer | The primary key of the Mailbox Item. | ||
| userPk | Integer | The primary key of the User. | ||
| actionImmediately | Boolean | Optional | Indicates whether to set the Action Date to today's date. If omitted, a value of False is assumed. |