newsupernova/vendor/magento/module-email/etc/db_schema_whitelist.json

{
    "email_template": {
        "column": {
            "template_id": true,
            "template_code": true,
            "template_text": true,
            "template_styles": true,
            "template_type": true,
            "template_subject": true,
            "template_sender_name": true,
            "template_sender_email": true,
            "added_at": true,
            "modified_at": true,
            "orig_template_code": true,
            "orig_template_variables": true
        },
        "index": {
            "EMAIL_TEMPLATE_ADDED_AT": true,
            "EMAIL_TEMPLATE_MODIFIED_AT": true
        },
        "constraint": {
            "PRIMARY": true,
            "EMAIL_TEMPLATE_TEMPLATE_CODE": true
        }
    }
}