Alternativa Betasendu za Self-Hosted z licenco odprtokodnega vira

• Self-Hosted
  Vse platforme Windows Linux Android iPhone Apple Watch iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) Wordpress Microsoft Office Outlook iOS Amazon SES (Simple Email Service) Microsoft Exchange Server
• Open Source licenca
  Vsako dovoljenje Brezplačna licenca Open Source licenca Trgovsko dovoljenje