Alternativy k Mailsac pro iPad s licencí open source

• iPad
  Všechny platformy Windows Mac Linux Chrome OS Android iPhone Windows Phone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) Firefox Opera Safari Windows Mobile Xfce Apple TV Chrome Gmail Telegram Yandex.Browser Viber
• Licence Open Source
  Jakákoli licence Bezplatná licence Licence Open Source Komerční licence