Happy #GlobalSwitchDay

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submitted by amzd

Happy #GlobalSwitchDay

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104 Comments

Onno (VK6FLAB)

I get that WhatsApp is not a platform to use if you care about your privacy, but WTF is "Delta Chat" and why would I switch to it rather than say Signal?

Successful_Try543

As I've understood, Delta chat is based on the IMAP protocol and uses the infrastructure of your email provider. Thus, it uses no own server infrastructure, but has the also the downsides of the protocol and some issues with many email providers.

Wikipedia.de - Delta Chat (no English version available yet)

JubilantJaguar

some issues with many email providers

This turned out to be the deal-breaker for me. GMX kept locking me out of my account because of the DeltaChat messages. They're (of course) full of cyphertext and to email providers this must look a look like spam.

The open-to-abuse nature of email claims yet another victim.

anyhow2503

On the other hand, GMX (and web.de) is a notoriously bad influence on email communication and will randomly block mailservers if they feel like it while flooding all of their own users with spam. The world would be a better place without 1&1 / united internet.

JubilantJaguar

But it's a free Europe-based provider that's not US big tech. A better suggestion?

To be clear, I use a *paid* service (Mailbox.org) for my main email, *as everyone should do*.

anyhow2503

I agree with your recommendation. As for free/freemium email providers, there's Tuta for one. I'm hoping that there are others.

socsa

Right, they don't support the advanced login protocols some providers like outlook require. That was a deal breaker, because deltachat was pretty much the last encrypted messaging service which worked in China.

perfectly_boiled_pizza , edited

I also prefer Signal, but I think the point here is that Delta Chat is decentralized.

Humanius

Imo it's already difficult enough to convince friends and family to use Signal. Delta Chat would be even more difficult to pull off.

coacoamelky

It's hard to get techies to see that, plan for the lease savy user.

amzd [OP] , edited

How is it different? In my experience it’s easier as they’ve already heard of email.

FundMECFS

The difference is signal has millions of users and most people have already maybe heard of it.

Serinus

The other difference is that promoting more and more obscure, useless shit ruins your credibility for when you're trying to get them to Lemmy or Signal or Mastodon.

Signal is an absolutely fine product and doesn't need to be decentralized right now.

fmstrat , edited

So is Matrix and it's way more popular. But recommending anything other than Signal at this point is a waste. Fediverse chat is a more complex conversion for many who are still in the connect via phone number stage for chat. Fediverse is an easier story for other platforms.

amzd [OP]

Because delta chat is using an open protocol (email) and you can run your own servers meaning it is decentralized unlike Signal. Also it is actually anonymous unlike Signal, so you don’t need to give anyone your phone number and people can’t find where you live just by knowing your username.

sabreW4K3

Because delta chat is using an open protocol (email)

So not an instant messaging protocol but rather a technology that the whole world would do differently if they could go back in time?

amzd [OP]

Could you be more concrete? In what relevant way do you think it does not work as an instant messenger? Keep in mind that Delta Chat is not a theoretical thing and it works as well as any other messenger.

sabreW4K3 , edited

Regarding SMTP:

SMTP (Simple Mail Transfer Protocol) is a foundational technology for email, but it has some limitations. Here are some ways it could be improved: * Security: SMTP was designed in a time of less pervasive security threats. It lacks built-in encryption and authentication mechanisms, making it vulnerable to eavesdropping, spoofing, and spam. While extensions like TLS/SSL and authentication methods exist, they are not universally implemented or enforced.

  • Efficiency: SMTP is a "chatty" protocol, meaning it involves multiple back-and-forth exchanges between the client and server. This can lead to latency and increased resource consumption, especially for large emails or bulk sending.
  • Deliverability: SMTP doesn't have mechanisms to guarantee email delivery. Emails can get lost, delayed, or filtered as spam. While techniques like SPF, DKIM, and DMARC help, they are not foolproof.
  • Features: SMTP is primarily designed for sending emails. It lacks features for managing email content, tracking delivery status, or handling complex email workflows. Possible Improvements:
  • Mandatory Encryption: Enforcing TLS/SSL encryption for all SMTP connections would protect email content from interception.
  • Stronger Authentication: Implementing more robust authentication mechanisms would prevent spoofing and ensure that emails originate from legitimate senders.
  • Enhanced Deliverability: Developing mechanisms to track email delivery, provide feedback on delivery failures, and reduce spam filtering would improve deliverability.
  • More Efficient Communication: Exploring alternative protocols or extensions that reduce the "chattiness" of SMTP could improve efficiency.
  • Integration with other technologies: Integrating SMTP with other technologies like REST APIs or message queues could enable more complex email workflows and features.

It's important to note that some of these improvements are already being addressed through extensions and best practices. However, there is still room for improvement in making SMTP a more secure, efficient, and reliable technology.

Never mind:

Delta Chat doesn't use its own proprietary protocol. Instead, it cleverly leverages the existing email infrastructure for message delivery. Here's how it works:

  • Core Protocol: IMAP/SMTP - Delta Chat primarily uses the standard Internet Message Access Protocol (IMAP) for receiving messages and Simple Mail Transfer Protocol (SMTP) for sending them. These are the same protocols your regular email client uses.
  • Encryption: Autocrypt & OpenPGP - To ensure secure and private communication, Delta Chat implements end-to-end encryption using the Autocrypt standard and the OpenPGP standard. This means your messages are encrypted in such a way that only the intended recipient can decrypt and read them.
  • Secure Key Exchange: SecureJoin - Delta Chat also utilizes the SecureJoin protocol for secure key exchange. This helps to prevent man-in-the-middle attacks and ensures that only authorized parties can establish secure communication. In essence, Delta Chat works by:
  • Sending encrypted messages as emails: When you send a message in Delta Chat, it's actually sent as an encrypted email to the recipient's email address.
  • Receiving encrypted messages as emails: Delta Chat constantly checks your email inbox for new encrypted emails that are meant for you.
  • Decrypting and displaying messages: When a new encrypted email arrives, Delta Chat decrypts it and displays it to you in the chat interface. This approach has several advantages:
  • Decentralization: No central server is required to store your messages, making it more resistant to censorship and single points of failure.
  • Openness: It leverages existing email infrastructure, making it interoperable with any email provider.
  • Security: End-to-end encryption ensures that your messages remain private and secure.

If you're interested in learning more about the technical details, you can check out the cryptographic analysis of Delta Chat available on the Cryptology ePrint Archive: https://eprint.iacr.org/2024/918

xorollo

PGP is a very curious choice. A quick Google search says a downside of this is that it does not provide "forward secrecy". From the Wikipedia page on forward secrecy, it prevents things like the following.

If an adversary can steal (or obtain through a court order) this static (long term) signing key, the adversary can masquerade as the server to the client and as the client to the server and implement a classic man-in-the-middle attack.

Serinus

I get that you're using AI directly related to your point, but it's still a lot of shitty AI spam.

Use it for your own research, but don't foist that on us.

amzd [OP]

I asked specifically for relevant issues and you just link general issues with smtp that have no impact on Delta Chat?

SMTP is not secure

Delta Chat sends encrypted messages over it so that’s irrelevant.

SMTP is not efficiency

Your phone can run LLMs, it can send a couple packets. Also this “chattyness” can be seen as an advantage as it is extremely robust and works on any network however inconsistent.

SMTP doesn’t have a way to ensure stuff is delivered

Yeah duh? It’s decentralized. You can’t ensure that the recipient doesn’t take down their server?…

Etc. I feel like I’m wasting my time replying to all these because it seems you didn’t even take the time to read them yourself.

asudox

So XMPP?

sabreW4K3

Should definitely be the go-to

heavydust , edited

If you use your email, it's anonymous but you have to use your email which is almost never anonymous and has your phone number. Also you sometimes have to "Create an app-specific password" that delta chat will use and gain full access to your email account, which is way worse than signal or any other application. And for some accounts, you have to use your real password, and maybe disable the spam protection.

Am I wrong somewhere or is that a really stupid idea?

Autonomous User

If you struggle making a new email address, this is not for you.

athairmor

Which applies to 99% of people making Delta Chat not a viable alternative to WhatsApp.

The Fediverse has the same problem that Linux, and Open Source in general, struggles with. The barriers to entry and network effects work against widespread adoption.

Until technology is packaged in a way that makes it dead simple and/or unavoidable, people won’t make the effort to move en masse.

Autonomous User , edited

Our words must be dead simple too.

'Open source' is a very ambiguous, confusing, phrase that makes it too easy for anti-libre software to scam.

amzd [OP]

During onboarding of the app you only choose a name and get a random email address

Zloubida

you don’t need to give anyone your phone number

You do not need to give your number anymore to use Signal.

amzd [OP]

You cannot make a Signal account without phone number so that’s not true.

Zloubida

But we are not obliged to share it with our correspondents.

Autonomous User , edited

Unregistered users can't chat, so it needs a number, as OP said.

amzd [OP]

Yeah I’d rather not share my identity though. Seems like an odd requirement for a “private” messenger

gi1242

you need a phone number to make an account. but you can chat with others without divulging your phone number

Autonomous User , edited

Unregistered users can't chat, so a number must be divulged to Signal, as OP said.

deadcatbounce

Did anyone tell the WhatsApp users?

Konstant

How can we tell them if we aren't in Whatsapp?

Autonomous User , edited

Try meeting more people.

PlasticExistence

Eww

deadcatbounce

Join obv. 😜

𝒎𝒂𝒏𝒊𝒆𝒍 , edited

Frankly it's the first time I hear about Delta chat

PhillyCodeHound

Never heard of DeltaChat why not signal??

udon

It's a good one (Signal as well, though). My favorite design decision was to tie it into the email ecosystem, so if anyone tries to block it, they will have to block email, which their business buddies won't be happy about.

Some more here:

https://media.ccc.de/v/36c3-oio-154-delta-chat-e-mail-based-messaging-the-rustocalypse-and-ux-driven-approach-ybti-wefixthenet-session-

amzd [OP]

Because Signal is not decentralized nor anonymous

Itsapersonn

Not federated, but definitely anonymous. All Signal messages are E2EE, and Signal can't even access your messages. They literally have a page where they list every time they've been asked by the government to give info, and they can't. https://signal.org/bigbrother/

moseschrute

Wait that’s really funny

umbrella

with these its more about whos using it

Yeah. Bit hard to switch messenger apps when they don't talk to each other if nobody you're talking to switches with you.

fxomt , edited

Doesn't delta use email under the hood, an insecure protocol?

You're better off using something like Matrix, XMPP, SimpleX or Signal.

Brewchin

Email? So its just encrypted SMS?

Might come down to the metadata, then, like SFTP vs FTPES or GET vs POST.

TrickDacy

Sms and email are not remotely the same

Brewchin

I've worked with both in my career. Tell me more...

fxomt

I guess so. It's encrypted data sent over email from what i understand. Tbf i'd rather trust software built with protocols specifically built for secure and private messaging, and email is known to not be that.

amzd [OP] , edited

The protocol doesn’t really matter when you send encrypted messages over it like Delta Chat. Signal is not private nor decentralized and SimpleX doesn’t have encrypted group chats last time I tried

fxomt , edited

The protocol doesn’t really matter when you send encrypted messages over it like Delta Chat

Maybe. My comment was based off of what i understood from the website

Signal is not private

Could you elaborate on this? haven't heard of this point (is it due to the jurisdiction on a 5 eyes country?)

SimpleX doesn’t have encrypted group chats last time I tried

It actually does now. It's a very solid choice i'd say :)

amzd [OP] , edited

You need a phone number to sign up which requires identification in most countries.

Also anyone who knows your username can ping where you are at any time: https://gist.github.com/hackermondev/45a3cdfa52246f1d1201c1e8cdef6117

massive_bereavement , edited

You are confusing privacy with anonymity. You aren't anonymous because your user is linked to a phone number, but your communications are private due to how their encryption works.

On the location attack: it is a matter of configuration and your location will be as ambiguous as thousands of miles.

Autonomous User , edited

Finessing the terms does not stop them demanding a phone number.

fxomt

Interesting, thanks. I think SimpleX fixes a lot of signal's issues, but the only problem i have that it is funded by VC and quite new.

Ulrich

They are open source and decentralized and indeed there are already a few forks.

amzd [OP]

Ah so they are just capturing users currently and will have to make return on investment later? That’s a no from me.

gi1242

so I found it interesting and checked it out. the protocol is all well and good but the problem is social. I'm simply not going to send people my delta chat Id and ask them to message me there instead if they have delta chat installed. I had the same problem with session messenger.

when I meet someone irl I'm trading phone numbers. not asking if they have app X installed.

this might be useful for open source projects where you can use ur delta chat id instead of ur email. but it's not something I would use unless it's a requirement to join some community I wanted to.

the problem signal solves by tieing accounts to your phone number is contact discovery. thanks to user IDs you no longer have to share your phone number with people u want to chat with, and can only share your user id

plus signal guarantees the metadata is encrypted. is the same true for delta chat?

Statick

I've tried a ton, and DeltaChat came close, but there is no edit option for messages, since under the hood, it uses email. The apps on both iPhone and Android also had issues with notifications. I convinced a few family members and friends to use it and then had to convince them again to move to Signal. Lost a few of them in the process.

The point of my story is to say... If you think you'll have a hard time convincing people to get off WhatsApp/Texting, just go to Signal. It is much more mainstream and at least it isn't Facebook.

ᴇᴍᴘᴇʀᴏʀ 帝

I'm resigned to friends and family being almost impossible to get off WhatsApp. Despite being Meta it is also quite difficult to enshittify. If they manage it, I might be able start a conversation but until then it has to stay.

For everything else Fediverse related I'm using Matrix as most Lemmy business happens there (Lemmy uses it for secure DMs so it makes sense). I will try and move people across from other chat platforms to Matrix on an ad hoc basis.

Chemical Wonka

ZeroOne

Basically it's an Open source Whatsapp, but you use Email, instead of a phone number

Jake Farm

So like matrix?

haverholm

It's email, adapted to a chat UI.

OhNoMoreLemmy

Oh that's good.

I've often wondered how could I make my instant messaging less instantaneous, while giving a new app access to my banking emails.

haverholm

Right? I did try Delta many years ago, and I really recommend using a new email account for it.

amzd [OP]

You can now also choose to just be assigned a new email account when you start using Delta Chat (only drawback is that you can’t send unencrypted emails with that email account so you can’t use it for anything other than chatting)

haverholm

Oh, cool. TBH I don't think that's a drawback, just customised to the very specific usage. So you get a _@deltachat.org email or something?

Autonomous User , edited

If you struggle making a new email address, this is not for you.

amzd [OP]

Yea but not in vc debt so without the incentive to sell out users

NotNotMike

What VC money has Matrix taken? Genuinely curious

amzd [OP]

30 million dollars https://element.io/blog/element-raises-30m-as-matrix-explodes/

You can argue that element is not matrix but you’re fooling yourself. Others even have to look at how element implements stuff instead of following the matrix spec

NotNotMike

Good to know, thank you for the link

HappyTimeHarry

Matrix has bridges for every other chat service, so all your friends who refuse to switch don't have to.

SolarPunker

SimpleX is the best alternative right now, email is a very bad protocol

gi1242

there's also session

https://getsession.org/

unfortunately privacy and usability are inversely related. session is private. I loved it. but I had no one to chat with 😃

I had no idea if any of my contacts were on session or not.