SATE-EasyReceipt/app/Mail/Members/Member.php

<?php

namespace App\Mail\Members;

use App\Mail\BaseMailer;

abstract class Member extends BaseMailer
{
    public function getParams(): array
    {
        return array_merge($this->getMemberParams(), [
            'email' => $this->__email
        ]);
    }

    abstract public function getMemberParams(): array;
}