I think this should be done smarter way. We dont need another Signal.
What we need is federative decentralized communication standards which will allow users to send message from Proton Messenger to Telegram / Pixelfed / Mastodon / Signal etc. it could use Signal protocol.
Why we can send email from gmail to icloud or proton, but we cannot pm from signal to any other messenger? This would be real freedom.

Is Meet going to be the app that will incorprate chat? It's funny how this has been around since 2015, but the app that got built was a video conferencing platform with chat as a sidebar.

Maybe instead of creating yet another IM you could acquire DeltaChat https://delta.chat/

Hi Proton Team,

I’m a long‑time Proton user and I appreciate the strong focus on privacy that you bring to email, VPN, Drive, and now Lumo. I’d like to suggest adding a dedicated, privacy‑first chat/messaging application to the Proton suite.

What I’m Asking For
A secure instant‑messaging app that offers:
* End‑to‑end encryption for all messages, voice calls, and video calls (similar to Theema’s or Signal’s model).
* Self‑destructing / disappearing messages and optional “ghost mode” where no conversation history is stored.
* Cross‑platform support (iOS, Android, macOS, Windows, Linux, and web).
* Seamless integration with existing Proton services:
* Use the same Proton account for login.
* Attach files directly from Proton Drive.
* Optionally route AI‑assisted replies through Lumo (e.g., draft replies, summarize long threads).
* Group chat capabilities with granular admin controls and invitation links.
* Two‑factor authentication and device management consistent with Proton’s security standards.

Why This Matters
* Completes the privacy ecosystem: Users already rely on Proton for encrypted email and VPN; a chat app would let them keep all real‑time communications under the same trusted umbrella.
* Reduces reliance on third‑party messengers that harvest metadata and content.
* Leverages existing infrastructure: Proton already runs zero‑access encryption and secure key management; extending this to messaging is a natural next step.
* Competitive advantage: Few mainstream providers offer a fully integrated, privacy‑first suite covering email, cloud storage, VPN, and now chat.

Possible Use Cases
* Teams collaborating on sensitive projects without exposing data to commercial messengers.
* Families sharing personal moments while preserving privacy.
* Individuals needing a secure channel for health, legal, or financial discussions.

I believe a Proton chat app would resonate strongly with the community that values security and privacy. Thank you for considering this suggestion—I look forward to seeing how Proton continues to expand its privacy‑first toolbox.

Best regards,

This idea is from 2015.... please get this created already!

It's been under review for 10 years and still hasn't been accepted? It's hilarious, ha ha ha. "We designed our encryption flexible enough to allow for chat. But we're not planning it for the summer. Probably in 2016." What year? 2025, and it's still coming. :/

'Proton Chat' should be a Matrix client with a European based Synapse server, free for all. Proton Unlimited, Duo & Family should get access to bridges like SMS, Signal, Telegram etc.

Would love if they just host Matrix instance. It's not hard, they won't have to develop anything new, and Matrix is already secure.

It should be similar to Telegram, but login to register by email

Please build this upon Matrix as an open communication protocol and offer separate instances for businesses with custom domains & options to limit federation.

This is top of my list as well. Everyone mentions Signal, but I have no desire to use that because I don't need yet another separate chat app/account. Privacy isn't the only reason people want Proton Chat, although that's a huge perk. We also want to have a chat function under the same subscription/ecosystem. That's why people like Google Chat, it's all under the same roof. It's great for businesses, when they add their staff to Workspace they now have a built in chat their staff don't have to sign up for, and it integrates great with sharing docs and files in Drive. This is what Proton Chat would be competing with and be a huge upgrade on imo, with its added security and privacy, and just another reason people can make the move entirely from Google to Proton.

I would very much like to see this feature implemented. I used google chat most days with my wife, and it's a feature I do actually need to communicate with her. If you guys believe in your encryption and privacy infrastructure, why not put your money where your mouth is and provide pairity with google's equivalent services, except with your privacy strengths?

I would love to see this added to the Suite.

Before I knew better Hangouts was the bomb.

For about 10 years have been using Zoho Cliq, has worked very well, and integrated with their suite.

There are other viable options yes, but I think those of us with our security/privacy in mind would be much more apt to use a service from you.

I for one don't trust Signal, have heard many stories of things still getting out.

Just use Signal. Don't split even more the people/community

From my perspective, this Feature will not make the proton environment richer. Why? Like comments below, people already using Signal or other communication Apps and they already have their network there. Proton-Team should concentrate their strength in basic stuff like: Doc-, Sheet-, Note- and Present-Apps!!! That kind environment should give businesses and research people the ability to work and collaborate in a privat and save environment. Thanks

This would not add much, as there is already Signal.
It's not hosted in the EU, but Signal has Perfect Forward Secrecy on the end-to-end layer. This means that every message has its individual encryption key, so even if the Signal server collected all messages sent, it couldn't decrypt them.

Hello Proton! Any news about that? :)
It would really help to have this feature.

An RCS Chat would be awesome, then WhatsApp and GoogleMessage would be obsolete

@Proton
Hey, it's been a few years since you seem to have looked at this. Do you have intentions to do it?

This would be a tremendously well received product and really should be top priority.