this post was submitted on 03 Aug 2025
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Proton’s Lumo AI chatbot: not end-to-end encrypted, not open source (pivot-to-ai.com)
submitted 4 days ago by Pro@programming.dev to c/technology@lemmy.world
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[–] EncryptKeeper@lemmy.world 8 points 3 days ago* (last edited 3 days ago) (2 children)

They support IMAP. Which means, IMAP client can read your mails from the server.

Proton mail does not support IMAP. Because your emails are encrypted on the server.

Again, unless you add a layer of encryption (assuming the recipient understands it, too), it's plaintext. On the servers.

Protonmail doesn’t claim that non-protonmail email is end to end encrypted. Any emails sent to a regular email without third party encryption will be plain text through the SMTP server, but they don’t store it. So in this case they are still not storing your emails in plaintext. Your recipient will, but that’s out of Protonmail’s control.

shows up in full plaintext on their SMTP server. Whatever they do after that (and we've established it's not client-controlled encryption), they have access to it.

You’ve not established that at all. Protonmail stores that message with client side encryption and they have no access to it. Nothing you’ve brought up here suggests that anything is stored in plaintext on Protonmail servers.

[–] cley_faye@lemmy.world 2 points 3 days ago

I'll just repost the same message here, for completion sake.

Well, I've been had. There is no IMAP support indeed, during my quick lookup around it, I ended up on a website that does look a lot like a real documentation that claim it does. My bad.

The point about sending and receiving messages in cleartext stands, as SMTP works that way, but at rest it is possible they're keeping them encrypted.

[–] cley_faye@lemmy.world 1 points 3 days ago

Well, I've been had. There is no IMAP support indeed, during my quick lookup around it, I ended up on a website that does look a lot like a real documentation that claim it does. My bad.

The point about sending and receiving messages in cleartext stands, as SMTP works that way, but at rest it is possible they're keeping them encrypted.