XF 2.3 Custom BB Code Content Is Not Displayed in Email Notifications

[htsumer]

Hello,

I have created a custom BB Code with the following setup:

1. I set the Pre option as the title using Custom BB Codes.
2. I entered the required text/content into an HTML page.
3. I assigned the Font Awesome comment-dollar icon to the editor button.

When I click the icon in the editor, the following BB Code is inserted:

[IBAN].[/IBAN]

By replacing the dot (or another placeholder) between these tags, the corresponding HTML content is displayed correctly in the editor. So far, everything works as expected.

However, when someone replies to a post containing this BB Code, the email notification sent to the user displays only the raw BB Code:

[IBAN].[/IBAN]

The actual HTML content is not rendered in the email.

I understand that email notifications cannot interpret custom BB Codes directly. Is there a way to make XenForo render the custom BB Code as HTML content in email notifications as well?

In other words, can the custom BB Code be parsed and converted into its corresponding HTML output when generating email notifications, rather than displaying the raw BB Code tags?

Any suggestions or guidance would be greatly appreciated.
It affects all custom BB Codes on my XenForo forum.
Thank you.