# License

This section is different depending on which version of MsgFiler 4 you are using.

## Mac App Store

This section displays purchasing options and information when you have signed up for a subcription or purchased the Lifetime Unlock. 

The prices shown are subject to change and will depend on which country's App Store your Mac is currently attached to.

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* **Restore Purchases**: If you reinstalled MsgFiler 4 and your license information does not appear, click Restore Purchases to contact the App Store and try to retrieve your past transactions.
* **Manage Subscriptions**: You can cancel your subscription on this Apple website.
* **Change Plan**: If you want to upgrade or downgrade your subscription, or purchase a Lifetime Unlock, click **Change Plan**.

{% hint style="warning" %}
If you purchase the Lifetime Unlock and are currently subscribed to a monthly or annual plan, you will have to cancel your subscription from the Manage Subscriptions page. [Learn more here](https://support.apple.com/en-us/HT202039).
{% endhint %}

## Gumroad

This section displays information about your license key. If you have not registered MsgFiler 4, you can enter your license key and activate your copy.

* **Purchase**: Open a browser to Gumroad's website to purchase a license for MsgFiler 4.
* **Activate**: Find your License Key in the confirmation email you received after you purchased MsgFiler 4 from Gumroad. Click **Activate** to verify your license details and register MsgFiler 4.
* **Deactivate License**: Remove the license from this Mac.

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The information displayed when you verify your license key is as follows:

* **License Key**: The license key you entered.
* **Registered Email**: The email address associated with the purchase from Gumroad.
* **Purchase Date**: The date the Lifetime Unlock license for MsgFiler 4 was purchased.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.msgfiler.com/settings/license-settings.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

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.