Alternativa NeutronMailu za S/MIME s komercialno licenco

• S/MIME
  Vse platforme Windows Mac Linux Android iPhone Android Wear iPad Web Self-Hosted Software as a Service (SaaS) PHP JavaScript Windows Mobile Java Mobile S60 Docker Cloudron OpenPGP Kubernetes S/MIME OpenShift DAVdroid
• Trgovsko dovoljenje
  Vsako dovoljenje Brezplačna licenca Open Source licenca Trgovsko dovoljenje