Alternatif untuk Mailsmith untuk PortableApps.com dengan lesen sumber terbuka

• PortableApps.com
  Semua platform Windows Mac Linux Chrome OS Android iPhone Apple Watch iPad Android Tablet Windows S Web Self-Hosted BSD Xfce Haiku PortableApps.com Slack F-Droid Ruby Gmail GNOME Cloudron Amazon Echo (Alexa Voice Service) PureOS (Purism)
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