ProtonBlog(new window)

Proton Mail launches support for encrypted email on Outlook and Apple Mail

December 6, 2017
Geneva, Switzerland

What is Proton Mail Bridge

Proton Mail Bridge is an innovative application designed to revolutionize encrypted email. After nearly two years of research and development, the company has solved one of the longstanding obstacles that has prevented the widespread adoption of encrypted email, that is, the need for end-user retraining and email behavior changes that usually lead to a loss in productivity.

“The Proton Mail Bridge is literally a bridge between the unencrypted and encrypted worlds in the sense that it allows your average user to benefit from the added security and privacy of end-to-end encryption without having to make any changes to their email usage behavior.” says Proton Mail co-founder Dr. Andy Yen, “This means email encryption is no longer limited to just the tech savvy and advanced users.”

The software acts as a layer between desktop email clients and Proton Mail’s encrypted email servers, handling all aspects of encryption, decryption, and key management in a way that is completely transparent to the end user. For the first time ever, it is possible to use encrypted email with Microsoft Outlook, Thunderbird, and Apple Mail without needing to install plugins, extensions, or make other modifications to users’ desktop email clients. The power of this approach is that users can continue to use email as they always have, without needing to make any changes to their existing workflow in order to use end-to-end encryption.

By conducting the encryption and decryption in a middleware between email servers and the user’s email client, the Proton Mail Bridge also enables full-text search of encrypted messages for the first time ever, as the native search capabilities of desktop email clients can be used without compromising the encryption.

“Over the past 3 years, we have built some of the world’s most useful encryption technologies that protect millions worldwide, but the Proton Mail Bridge is certainly the most innovative one, and the one that will have the most far-reaching impact,” says Dr. Yen, “Today’s launch accomplishes one of our long-standing goals of bringing security technology to the mainstream.”

For now, the Proton Mail Bridge officially supports Microsoft Outlook, Thunderbird, Apple Mail, although it can work with any IMAP/SMTP email client. The Proton Mail Bridge is currently available for Windows and MacOS, with a Linux version coming in early 2018.

For more details about Proton Mail Bridge, please refer to our launch blog post here.

Proton Mail’s media kit can be found here.(new window)

Proton Mail Bridge images can be found here(new window).

About Proton Mail

Proton Mail is headquartered in Geneva, Switzerland, near CERN (the European Organization for Nuclear Research) where the founding team met in 2013. Every day, the Proton Mail team, brought together by a shared vision of protecting civil liberties, works to advance Internet security and privacy. Since its inception, Proton Mail’s infrastructure has been located exclusively in Switzerland, under the protection of some of the world’s strongest privacy laws.

Media inquiries: media@proton.me

Secure your emails, protect your privacy
Get Proton Mail free

Related articles

passwordless future
With the advent of passkeys, plenty of people are predicting the end of passwords. Is the future passwordless, though? Or is there room for both types of authentication to exist side-by-side?  At Proton, we are optimistic about passkeys and have int
At Proton, we have always been highly disciplined, focusing on how to best sustain our mission over time. This job is incredibly difficult. Everything we create always takes longer and is more complex than it would be if we did it without focusing on
is icloud keychain safe
If you’re on any Apple device, you’re familiar with the iCloud Keychain, the Apple password manager. It’s a handy tool that stores passwords for you and helps you manage your logins.  For a program that stores all your most sensitive data in one pla
We recently announced that Proton Pass now supports passkeys for everyone across all devices. Universal compatibility is a unique approach to implementing passkeys, unfortunately. Even though passkeys were developed by the FIDO Alliance and the Worl
How to upload and share private video
Your private videos are for your eyes only. However, not all cloud storage services are good at storing videos securely, let alone privately. In this article we explain what you can do to keep file sharing companies from having access to the videos y
Many email services, citing security reasons, require a phone number for identity verification. This creates an unfortunate paradox in which you must give up a highly sensitive piece of personal data to Big Tech. But there are simple ways to create
Can you password-protect a folder in Google Drive?
Protecting a folder with a password is a simple yet effective way of securing files. You may wonder whether you can password-protect a folder in Google Drive. We explain what access controls Google Drive offers and what you can do to improve your sec