IMHO it is best possible client for Android based systems, like LineageOS for microg mentioned in last entry. You can get it directly form Github or from Google Play or F-Droid stores.


  • it's opensource
  • there are many features that usually you need to pay for and plenty of additional settings
  • secure - you can use own pgp for encrypted and signed messages
  • for example  you can disable poor ssl protocols for connections or check mx dns of email sender
  • privacy - it cares about privacy (doesn't collect data, doesn't store it on some server, you don't need to grant special permissions etc.)
  • there are many other privacy options eg - by default all messages are formatted in a way that prevents you from clicking in something nasty
  • there is a PRO version to support creator with special features like email sync scheduler

CONS - didn't find any.