Alternativas ao Icedove para Android Tablet com licença de código aberto

• Android Tablet
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone Apple Watch Android Wear iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Firefox BSD Windows Mobile Xfce Haiku PortableApps.com F-Droid S60 elementary OS GNOME OpenPGP S/MIME
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial