With this you can intervene in the sent fields via the feedback form. You can also add your own fields, which will then be saved in the database.

$fields: name, email
$session: Everything that is actually stored in a session can be found in this optional variable.

 * This can be used to edit sent fields.
 * @param array $fields submitted fields.
 * @param array $session submitted session data.
 * @return array
add_filter('helpful_feedback_submit_fields', function (array $fields, array $session) {
    return $fields;
}, 10, 2);
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