If you need secure 1:1 chat, #XMPP-#OMEMO is the way to go. You could even use something like #DeltaChat which is based on PGP/MIME-eMail and allows you to keep stuff #E2EE - encrypted yet also save a history which you'll get sync'd across devices.
https://f-droid.org/packages/com.b44t.messenger/
Remember: #NotYourKeys = #NotYourControl = #NotSecure!
#notSecure #notyourcontrol #notyourkeys #e2ee #DeltaChat #omemo #XMPP
Remember: #NotYourPrivateKeys = #NotYourControl!
#notyourcontrol #notyourprivatekeys
@ahriboy Unlike @torproject which is sufficiently decentralized that people from the #TorProject can't shutdown #OnionServices [otherwise they would've been forced at gunpoint several times already], #ProtonMail stinks #Glowie like #CryptoAG did since The Causa Bühler...
In fact @protonmail snitches on users constantly and I'd also not trust @Tutanota in that sense.
https://www.youtube.com/watch?v=QCx_G_R0UmQ
Remember: #notYourKeys = #NotYourControl = no effective #E2EE beyond #SSL & #TLS transport encryption!
#tls #ssl #e2ee #notyourcontrol #notyourkeys #CryptoAG #glowie #ProtonMail #OnionServices #torproject