It is for encrypted email only, its possible if the other people use some client that supports encryption, if you question is “can the email provider be used to send and receive unsecure unencrypted email that the server would have access to and read all my conversations?” the answer is no, the app can be used with such unsecure providers but arcanechat.me server is focused on security and no unencrypted email/data is ever stored on the server

If you use ArcaneChat (https://arcanechat.me/) or DeltaChat (https://delta.chat/) there is an in-chat mini-apps for split bills, you can use it with groups of friends totally private end-to-end encrypted between chat members without the need of any online service for split bills

It is an email provider but for encrypted email and optimized for speed and security, to use for chatting, the app looks like WhatsApp etc but every message is just an encrypted email

If what you want is encrypted email, and see it in the form of a chat, take a look at ArcaneChat

Not me, but someone on the signal forums helpfully compiled many of them; there are a lot more than I thought! https://community.signalusers.org/t/wiki-overview-of-third-party-security-audits/13243

ok I read it, these are no real security audits but academic reviews of protocol properties etc.

Matrix isn’t ready for the general public and I’m doubtful it ever will be, so in the meantime Signal is the next best thing.

yeah, it is too complex etc. take a look at https://arcanechat.me/ and https://delta.chat/ (I contribute to these open source projects) they are probably the decentralized messengers that are more on pair with WhatsApp etc. super easy to use, no phone numbers or any private data required

Not me, but someone on the signal forums helpfully compiled many of them

thanks for sharing!

It’s serverless though, right?

no, and in fact the cost of running it is really high because the server infrastructure they need to pay, they even say it themselves “Signal is expensive” https://signal.org/blog/signal-is-expensive/

it would be possible just to fork and use a “European” version of it

in theory yes, in practice no one has done it, and then you should not use Signal but the european fork which will not be compatible/federated with signal

It is a us based non profit that doesn’t store any information about you

still it runs in AWS, Microsoft, etc servers, and as any centralized service policy and interests can change at any time in the future, which would be pretty bad when you have several countries fully depending on them, just look the current situation with whatsapp, you can not be resilient/sovereign like that

has been independently audited like four times.

could you provide source pointing to the security audits?