adding hooks in custom email

Hello,

I’m trying to add a PHP hook in my custom email.

Is there a way to do it? I need to add:
do_action( ‘woocommerce_email_footer’, $email );

I’ve tried adding it into the HTML code of the custom email, but after I’ve saved the changes it changed it back. I’Ve put:

<?php do_action( ‘woocommerce_email_footer’, $email ); ?>

Thanks for any help¨
Boza

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