# New Mailbox

Create a new mailbox underneath an existing mailbox or a new top-level mailbox in Mail.

| Parameters   | Description                                                                     |
| ------------ | ------------------------------------------------------------------------------- |
| Action       | Creates a new mailbox or top level mailbox.                                     |
| Mailbox Name | The name of the mailbox to create.                                              |
| Mailbox      | A mailbox in Mail.                                                              |
| Account      | An email account in Mail. Can also refer to the local On My Mac folder in Mail. |

| Returns | Description                                          |
| ------- | ---------------------------------------------------- |
| Boolean | True if the mailbox was created successfully; error. |


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# Agent Instructions: Querying This Documentation

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```
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```

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.