k-9 VS Signal-Server

Yes; this work was started even before the latest FairEmail kerfluffle, and is slated for K-9 6.200.

https://github.com/k9mail/k-9/issues/655#issuecomment-113165...

Yes, of course you can. I am aware of this app but I have not yet fully tested it. I know about K-9 Mail too. Also not tested.

I agree because I need to test it. I am aware of K-9 Mail and FairMail though.

OAuth just got merged 5 days ago for K9-Mail. You just need to wait for a new version to be released, or build the app yourself.

I don't think K9 supports XOAUTH authentication over IMAP/SMTP yet [0], which is increasingly widely required by mail services.

[0] https://github.com/k9mail/k-9/issues/655

K-9 mail is a really good email client for Android as well

On mobile if your email provider uses open standards like IMAP/SMTP/POP3 then check out email clients: K-9 mail or FairEmail. I assume you're talking about mobile - otherwise, on desktop I suggest Thunderbird, but there are many options. As an example, Protonmai doesn't work with either of these and does require using their dedicated app.

> that was otherwise abandoned

What are you talking about? It was never abandoned. That UI redesign took them multiple years and they released several betas over that time period. Just almost nobody bothered to chime in during any of the betas and then everyone started to complain when it got to stable.

https://github.com/k9mail/k-9/graphs/contributors

> They could at least BSL the server code and allow others to verify the server code and host but not compete.

This is exactly what they do (except they use AGPL): https://github.com/signalapp/Signal-Server

https://github.com/signalapp/Signal-Server/blob/main/service/src/main/java/org/whispersystems/textsecuregcm/push/APNSender.java for APNs push notification payloads

git clone https://github.com/signalapp/Signal-Server.git

yes it is available here https://github.com/signalapp/Signal-Server/blob/main/service/pom.xml

You could also start your own signal server, but with blackjack, and hookers

The fact that it locks you into using their servers, does not distribute on F-Droid (only Google Play OR an APK with an insecure update mechanism), and has a completely closed-source "abusive message filter" module server side, that could functionally be used for censorship, storing messages for future decryption, or any other number of nefarious purposes - we have no idea since it's not open source (https://github.com/signalapp/Signal-Server/blob/main/.gitmod...).

Additionally, you cannot distribute branded forks or Signal, and if you do fork it, your fork is not allowed to connect to Signal's "official" OWS (open whisper systems) servers - hostility to federation should be viewed with prejudice and suspicion at the very least, it suggests a vested interest in a single point of failure (or control), which goes against user interests.

Further reading: https://drewdevault.com/2018/08/08/Signal.html

It’s actually the signal server that isn’t reproducible because of the abusive message filter that’s in a private repository. It’s clear as day here: https://github.com/signalapp/Signal-Server