Proton
Subscribe by RSS

Proton Mail is Open Source!

Proton Team

Share this page

Earlier today, we released Proton Mail 2.0 to the world. We are happy to announce that we are also releasing Proton Mail 2.0 as open source software! From the beginning, we have been strong proponents of open source software and the core cryptography libraries that we develop and use have been open source from day one.

Today, we are happy to take the next step and completely open source our webmail interface. This means all the Proton Mail code that runs on your computer is now available for inspection. We hope that by opening up our platform, we will encourage additional contributors to help us make Proton Mail the world’s most secure email service.

Our move to open source has actually been coming for a long time. While it would have also been possible to open source Proton Mail 1.x, we felt that such a move was not appropriate given that the code was intended to be deprecated. By open sourcing Proton Mail 2.0, we are open sourcing the future of Proton Mail. As we continue to expand our private email service with mobile apps, you can look forward to more open source announcements as our code base matures.

Proton Mail 2.0 can be viewed online on Github at the link below. As a nod to our CERN and MIT roots, we are releasing under the permissive MIT license. Let us know if you do something cool with our code.

https://github.com/ProtonMail/WebClient(new window)

We welcome all feedback at security@proton.me and look forward to continuing to improve Proton Mail with your help!

Secure your emails, protect your privacy
Get Proton Mail free

Related articles

en
Billions of people use online document editors like Google Docs or Microsoft 365 to write reports, collaborate on projects, and keep track of meeting notes. But there is a growing concern about Big Tech platforms having access to your content, tracki
en
Struggling to keep track of all your passwords? You’re not the only one. Password managers exist because it’s difficult to keep track of hundreds of logins and all their various passwords. It’s likely you have saved passwords on your devices for conv
en
Cyberattacks aren’t always executed through sophisticated methods like man-in-the-middle (MITM) attacks on public WiFi. Sometimes, they rely on something as simple as looking over your shoulder.  Shoulder surfing attacks are when someone watches you
en
Proton prioritizes our community’s privacy and data security in every aspect of our business.  To further demonstrate our commitment, we underwent a rigorous external audit and – on May 2, 2024 – received our ISO 27001 certification.  As an organiz
en
Anyone with an iPhone can now enjoy Proton Drive’s secure and private photo backup capabilities. This feature is gradually rolling out to the Proton community and will be available to everyone by the end of this week. Smartphones have made us all am
en
From the very beginning, Proton has always been a different type of organization. This was probably evident from the way in which we got started via a public crowdfunding campaign that saw 10,000 people donate over $500,000 to launch development. As