signal requires a phone number and won't even allow you to send sms to those that aren't on signal.
its better, but still not great.
this post was submitted on 21 Jun 2025
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If you need to send sms to someone not on signal, why not just send them an sms
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A truly ethical replacement would not need a phone number
And it would have as much spam as email.
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How about Delta Chat? At least as secure as Signal, open source, and decentralized.
Not saying that it's necessarily a bad option, but my biggest issue with delta chat is that it does not offer forward secrecy (if a user's private key is compromised, past messages can be revealed); Signal does. Delta no question beats signal in decentralization, though email is less decentralized than it seems--how many people do you know who still use gmail? Delta also inherently leaks metadata on whom you're communicating with to the email host (that's just imap/smtp). Signal can mitigate this somewhat with Sealed Sender (which gives one-way anonymity), though it can be broken with statistical analysis, and signal metadata is more identifying due to requiring a phone number.