Alternativy k Peace Mail pro Self-Hosted s bezplatnou licencí

• Self-Hosted
  Všechny platformy Windows Mac Linux Chrome OS Android iPhone Android Wear iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Software as a Service (SaaS) PHP Windows Mobile Java Mobile S60 Android TV Chrome Cloudron OpenPGP
• Bezplatná licence
  Jakákoli licence Bezplatná licence Licence Open Source Komerční licence