Alternatif untuk MailSpons untuk Self-Hosted dengan lesen sumber terbuka

• Self-Hosted
  Semua platform Windows Mac Linux iPhone Web Self-Hosted Software as a Service (SaaS) Firefox Opera Safari PHP JavaScript BSD Java Chrome Docker Ruby Node.JS C++ Yandex.Browser Laravel
• Lesen Open Source
  Mana-mana lesen Lesen percuma Lesen Open Source Lesen komersil