Our Encrypted Email Service is Safe Against Linux TCP Vulnerability

August 12th, 2016 in Security

ProtonMail is not vulnerable to the recently announced Linux TCP Vulnerability Earlier this week, a rather serious Linux TCP Vulnerability was disclosed (CVE-2016-5696) by security researchers in the US. As a result, ProtonMail’s security team did an analysis of this bug to see if it compromises the integrity of ProtonMail’s encrypted email service. Our analysis …

OpenPGPjs email encryption library

ProtonMail now the maintainer of OpenPGPjs email encryption library

August 2nd, 2016 in Encryption

OpenPGPjs is the world’s most popular JavaScript PGP email encryption library and is used by millions of end users and hundreds of developers.   We are happy to announce that ProtonMail will become the primary maintainer of the OpenPGPjs project. We would like to thank Tankred Hase, formerly the co-founder of whiteout.io, for his many …

Secure mobile email ProtonMail prevents brute force attacks

ProtonMail Mobile v1.4.0 Release Notes

July 12th, 2016 in Releases

We are happy to announce the release of version 1.4.0 of ProtonMail’s secure email app for iOS and Android! Version 1.4.0, which was previously available only to members of our mobile beta community, is now available in the iOS and Android app stores. You can get the non-beta version of the apps from the following …


ProtonMail v3.3 Release Notes

June 1st, 2016 in Releases

We have added two major enhancements to ProtonMail’s secure email service: Desktop Notifications and Hotkeys/Keyboard shortcuts One of the goals of ProtonMail is to make encrypted email easy-to-use.  This is why ProtonMail version 3.3 puts a heavy emphasis on the usability of ProtonMail by adding these two highly requested features. Below, we discuss these two …

Improve your secure email service by joining our back-end code audit

May 30th, 2016 in Security

To ensure the security of ProtonMail’s secure email service, we are looking for more back-end security auditors. At ProtonMail, our internal security team has always worked closely with our user community to ensure the security of our secure email service. ProtonMail’s strong security is partially due to the dozens of security contributors who have audited …

protonmail spam filtering

Effective Spam Filtering with Encrypted Email

May 17th, 2016 in Encryption

One of the biggest challenges at ProtonMail is doing effective spam filtering with encrypted emails. As many of you have noticed, in recent weeks, spam filtering performance at ProtonMail has dramatically improved. This is because we have recently deployed a series of updates to improve spam filtering performance. In this three part series of posts, …

protonmail 3.2

ProtonMail v3.2 Release Notes

May 13th, 2016 in Releases

Below are the release notes for Version 3.2 of the ProtonMail secure email web client. This release bring several enhancements including improved spam filtering and improvements to make labels more efficient and easy to use. We are now actively working on a future 3.x release which will contain a complete filters functionality which will allow …

ProtonMail Best Email App

The ProtonMail Mobile Apps are about to get even better!

April 22nd, 2016 in Articles & News

It’s official, ProtonMail is now the highest rated email app! Since we launched ProtonMail’s iOS and Android apps a month ago, we have had an amazing reception from the community. We are now the highest rated email app in the Android Play Store, with more than 3000 reviews. Hundreds of thousands of people around the …

ProtonMail Android Secure Email App

ProtonMail Android v1.3.2 Release Notes

April 21st, 2016 in Releases

Update: June 3rd, 2016 – Version 1.3.2 is now released in the Android Play store! Get it now. Please consider supporting ProtonMail by upgrading to a Paid Account. Your support allows us to continue to develop ProtonMail as free and open source software. Original v1.3.2 Beta Announcement Below: We are happy to announce the release …


ProtonMail iOS v1.2.3 Release Notes

April 21st, 2016 in Releases

Update: May 5th, 2016 – Version 1.2.3 is now released in the iOS App store! Get it now. We are happy to announce the release of ProtonMail iOS v1.2.3 BETA! This release is part of the ProtonMail Mobile Beta Program, release to the general public will come later. It is still possible to register for …

meet the protonmail support team

Meet the ProtonMail Customer Support Team

April 19th, 2016 in Articles & News

We believe a technology cannot be great without excellent support. Meet the people who are supporting the ProtonMail Community. The single most important part of ProtonMail is our incredible community who has supported us from the start. This is why we are committed to providing the highest quality of support for all ProtonMail users. Feedback …

protonmail launch

Announcement: ProtonMail has launched worldwide!

March 17th, 2016 in Articles & News

As of 12:30PM Geneva time, ProtonMail iOS and Android apps are available worldwide. ProtonMail is officially out of beta now and we are allowing open signups.   You can directly sign up for ProtonMail by visiting https://protonmail.com/signup The moment that many in our community have been waiting for has finally arrived. We have decided today …

Get your secure email account
Create Account

Proton Technologies AG

Chemin du Pré-Fleuri, 3
CH-1228 Plan-les-Ouates, Genève, Switzerland

For support inquiries, please visit

For security related discussions