Encrypted email service ProtonMail has come a long way since its global launch 18 months ago, having expanding into VPNs, started targeting small businesses, grown into multiple languages, and — most recently — launched an encrypted contacts manager. Now, the Swiss company is making its core service available in desktop email clients that support IMAP and SMTP, including Microsoft Outlook, Mozilla Thunderbird, and Apple Mail. Founded out of CERN in 2013, ProtonMail uses client-side encryption to ensure that all data is encrypted before it arrives on the companys servers. With high-profile data leaks permeating the news, and Donald Trump now in charge of things in the U.S., there has been a surge in sign-ups for online privacy tools, including encrypted messaging services and VPNs. Up until now, ProtonMail has only been available through web browsers and mobile apps, but with ProtonMail Bridge officially rolling out today, users can access their ProtonMail email accounts through their favorite desktop-based email client too. Its worth noting here that ProtonMail Bridge should work through any IMAP email client; however, official support is extended only to the aforementioned three applications on Windows and Mac, with Linux support coming in early 2018. Its also only available to paid ProtonMail users. ProtonMail Bridge is an application rather than a plugin for your desktop email client. This holds a number of advantages; for example, it doesnt interfere with the clients behavior and so isnt likely to cause any disruptions to a users workflow. But ProtonMail told VentureBeat that this also makes it far easier to deploy in an enterprise environment. The app acts as a local IMAP server running on the users local machine, a spokesperson said. The Bridge communicates with ProtonMails encrypted email server via our API, which supports end-to-end encryption, while email clients can communicate directly with the Bridge via standard IMAP. In this way, standard email clients running IMAP, which dont natively support end-to-end encryption, can achieve end-to-end encryption without modifications. Once youve installed the ProtonMail Bridge application, youll be prompted to enter your ProtonMail credentials within the app. Then, youll need to configure your email client, which ProtonMail provides these instructions for. Setting up ProtonMail on ThunderbirdMost people likely wont use ProtonMail exclusively, and may switch between Gmail and ProtonMail depending on their purpose. By adding support for desktop clients, users can seamlessly switch between accounts from a single interface, while they will also be able to import emails from other service providers into ProtonMail if theyre connected to the same client. It also opens up interesting new features, such as offline access to read your ProtonMail emails. Additionally, users can conduct full-text searches within ProtonMail, using the native search functions of the desktop client. This isnt possible through ProtonMail on the web or in mobile apps because the company doesnt have the ability to read messages — but with desktop clients, searches can be carried out locally without giving access to external parties. Over the past three years, we have built some of the worlds most useful encryption technologies that protect millions worldwide, but the ProtonMail Bridge is certainly the most innovative one, and the one that will have the most far-reaching impact, noted ProtonMail cofounder Dr. Andy Yen. Todays launch accomplishes one of our long-standing goals to bring security technology to the mainstream. ProtonMail has been known to have been working on supporting IMAP email clients for a while, and opened up access to beta users several weeks ago. That its only open to paid users is notable, but it makes sense as it gives the company one potentially powerful carrot-on-a-stick to lure users onto a paid plan — the company has to make money somehow, after all, if its not in the business of selling user data.
Mr. Robots email service of choice just expanded its support for a handful of popular email clients. ProtonMail just introduced a new tool, called ProtonMail Bridge, that could expand its relatively niche appeal to more mainstream users who arent yet comfortable with giving up their email client habits. ProtonMail, built around the encryption standard known as PGP (Pretty Good Privacy), previously required users to use its own apps or webmail service. Now, users loyal to common mail clients Apple Mail, Thunderbird, Outlook or anything else that supports IMAP and SMTP can run ProtonMail Bridge in the background to enable a ProtonMail account to play nice with one of those newly supported clients. The process maintains the core offerings of ProtonMail: end-to-end encryption, meaning that only a sender and receiver can view an email, and zero-access encryption, meaning that the email provider cant see your emails even if it wanted to. The best part is that this does not require modifying your email client or making changes to your existing workflow, the company writes in its announcement. Use email like you have always used it, and the Bridge will automatically encrypt and decrypt messages in the background. ProtonMail notes that Bridge users will enjoy some added convenience, including the ability to do full body text searches and to manage multiple accounts. While ProtonMail is a useful if not perfect encrypted email client, the company reminds users, as always, that encrypted email wont save you if anyone gains access to your device itself.