Alternativa Mailzoneu za Software as a Service (SaaS) z licenco odprtokodnega vira

• Software as a Service (SaaS)
  Vse platforme Windows Mac Linux Android iPhone Apple Watch iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) Python BSD Solaris MailWizz EMA Amazon SES (Simple Email Service)
• Open Source licenca
  Vsako dovoljenje Brezplačna licenca Open Source licenca Trgovsko dovoljenje