A simple, basic yet continuously improving and expanding, secure way to communicate with business partners and fellow employees through video chat, text messages, and emails; where large groups, small groups and sub-groups can be formed with various levels of access, in order to share ideas safely, and avoid corporate or country espionage.

There are so many messaging apps I don't think this would be very popular if Proton Messanger was a thing unlike secure email which ProtonMail is one of the few options out there.

If you want a good secure messaging app that is based on phone numbers use Signal. Its free, open source, and has all most of the features WhatsApp offers and a few more extra features like self destructing messages.

If you want a good secure messaging app that is based on accounts (Not email or phone number) use Wire. It Swiss made and is a lot like WhatsApp with messaging and video call. You can think of it as a secure version of Skype. To sign up you do need to give them a email or phone number but the other users you chat with will not see your email or phone number and they will only see your username and name but adding your name is optional. I recommend signing up on your desktop and not on mobile and sign up with your email so that way if you forget your password you can easily reset your password via email.

And there are so many other ones out there I can list but I have used many of them and these two I mentioned is what I used.

That's not a good idea, there are already many messaging apps encrypted end-to-end

We need protonchat now please.

I would like a chat feature within the email account. Also on the app if possible. That would be excellent

希望部要變成谷歌的後繼,因為我的android phone只允許PROTONMAIL,而完全脫離谷歌!

What are hangouts? I don't have Gmail

You should create a secure messaging app like Telegram but linked with our ProtonMail Account so that we can have a secure and fast exchange with our contacts. It would be encrypted in 4096 Bytes and we have to unlock it with our ProtonMail password or our fingerprints on the iOS / Android app. The users would be able to set their router as an exchange server for the app (like the Tor Network) with a system of bridges. Finally, the app would be free but the users can Donate via a dedicated Bitcoin Adress or a Paypal email.

Feature creep. Let's focus on EMAIL.

Also think that some cooperation with Signal developers would be good. Considering similar philosophy about privacy, promoting each other and maybe giving each other some good ideas how to make their services even more secure and private could be beneficial.

However Proton team should focus on task at hand for now rather than start developing their own messaging app. Proton messaging app or Proton drive is good idea to keep in mind for the future but it's better to add new features slowly than make soI'mme bugs affecting security.

Also think that some cooperation with Signal developers would be good. Considering similar philosophy about privacy, promoting each other and maybe giving each other some good ideas how to make their services even more secure and private could be beneficial.

However Proton team should focus on task at hand for now rather than start developing their own messaging app. Proton messaging app or Proton drive is good idea to keep in mind for the future but it's better to add new features slowly than make some bugs affecting security.

As others mentioned Signal already, it would just overlap, which is not very good - more apps, less people on one of each.

Proton mail is secure but it needs to be more attractive. A secure mail service with messenger, free call, storage for documents or collaboration, with ability to share photos and videos ,with a browser secure as well is a full package. Also take from gruveo , wherein you can chat on the webpage and call not necessarily an app. If you can embed the call and messenger without needto have an app on the page of the mail wow. that'd give you an edge. gruveo doesn't even require a caller to have an account or the app on the phone just an access to internet and it was featured on techcrunch.

I think that ProtonMail and Signal should just do some sort of two-way promoting, because they both have Edward Snowden's stamp of approval, and they both have similar philosophy about privacy.

Does ProtonMail operate/own http://protonxmpp.ch/?
Found via https://list.jabber.at/, wanted to confirm that it's being run by the same company.

Develop an app that encrypted can send sms and calls. Similar to the Signal app. Those who today use Protonmail will also be able to sms and call with encryption. The development of such that app will be a natural continuation of Protonmail.

Instead of making another chat app... You could dedicate some resources to improving Signal, which I think share a lot of your driving values.

P.S. If you still plan on making a chat app/service I put forth a name: Gluon.

Signal is a great app. Although it has the best security, its performance is not so great which I think is mostly due to financial constraints due to being free and open source.
If you want better performance WhatsApp implements Signal's e2e encryption and they have the Signal team's validation.

I agree that reinventing "secure and private chat" like everyone else is a very very bad thing to do.

Matrix is already shaping up to be absolutely wonderful -- it's feature-rich, its security and privacy is legitimate, it's open-source, and it's built around bridging to other chat networks, both open and closed.

A ProtonMail Matrix homeserver, with every ProtonMail user having an account, maybe even with a Matrix client built into ProtonMail, may be sensible, but even allocating those resources instead of just _using Matrix_ seems hard to justify.

Right now many android apps (BookMyShow, Freecharge in India & many other payment or wallet apps) mandatorily requires the SMS permission to be allowed for their function. Otherwise they crash or may not function properly. While doing bank transaction, when user receive OTP to verify the transaction these apps read that ORP directly and complete the payment without user confimation or little confirmation (as user have 3 secs to stop from auto confirming transactionl) I would like to see a SMS managing app from Protonmail which stores SMS in kind of encrypted way so that only human user can read those SMS amd not the these app or any other program. Such app for SMS will be more privacy friendly.