When using the Laravel 6 mail functionality, I would like to set the message subject in the email's blade template. This seems more natural to me than doing it in the Mail class itself, because whoever is maintaining the mail templates should also be able to customize the subject and use the template variables.
Example of what I am trying to accomplish:
@subject
Sample Message to {{ $user }}
@endsubject
@component('mail::message')
# Sample Message
This is a sample message
@endcomponent
How could this be done?