encrypted email authentication

Improved Authentication for Email Encryption and Security

December 1st, 2016 in Encryption

Today, we are happy to announce the launch of a brand new authentication system for ProtonMail’s secure email service using just a single password. ProtonMail launched with a two-password system—one to authenticate the user to ProtonMail, and one to decrypt the mail. The security benefit provided by this separation is easy to understand, but it …

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 open source 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 …

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, …

Why Banning Secure Email Won’t Stop Terror

November 24th, 2015 in Encryption

In the wake of the devastating terrorist attack on Paris two weeks ago, the entire team at ProtonMail is shocked and horrified. Being based in Geneva, Paris is not so far away, and in fact, many of our team have family and friends in Paris, whose safety we were immensely concerned about on the evening …

ProtonMail adds Facebook PGP integration

September 22nd, 2015 in Encryption

At ProtonMail, privacy is one of our core values. This means more than just building an email service which respects privacy. It means building an entire ecosystem around the idea of privacy being the default online. From the onset, it is clear that this is not something we can do alone. Last summer, over ten thousand …

ProtonMail Open Source Cryptography

June 13th, 2015 in Encryption

Over the past year, we’ve had a number of people ask us about our approach to Open Source software. The reality is that the most critical parts of ProtonMail have actually been open source from day one. This is not something that we have made a special effort to point out, and as a result it is …

What is End-to-End Encryption?

May 4th, 2015 in Encryption

End-to-end encryption is a method of transmitting data where only the users communicating can access and read the messages. By using cryptographic keys that only the users have control over, no eavesdroppers can decrypt the message, not even the servers that transmit the data.

Login and Mailbox Passwords Explained

September 13th, 2014 in Encryption

Update: As of December 2016, ProtonMail has switched to a Single Password system as the default. The Single Password system is described here. The Two Password mode described in this article is still available and supported, but is no longer the default. ProtonMail uses 2 passwords to secure your account: Login and Mailbox. Login Password …

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