all-in-one privacy solution":["Proton Unlimited est une solution tout-en-un respectueuse de la vie privée"],"Black Friday":["Black Friday"],"No ads. Privacy by default.":["Aucune publicité, le respect de la vie privée comme règle absolue"],"People before profits":["Les individus passent avant les profits"],"Security through transparency":["Notre engagement de transparence"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["Les meilleures offres ${ BLACK_FRIDAY } de Proton Mail"],"The world’s only community- supported email service":[" La seule messagerie au monde soutenue par la communauté"]},"specialoffer:limited":{"${ hours } hour":["${ hours } heure","${ hours } heures"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["Temps restant : ${ hoursLeft }, ${ minutesLeft }, ${ secondsLeft }"],"${ minutes } minute":["${ minutes } minute","${ minutes } minutes"],"${ seconds } second":["${ seconds } seconde","${ seconds } secondes"],"Limited time offer":["Offre à durée limitée"]},"specialoffer:listitem":{"Create multiple addresses":["Créez plusieurs adresses"],"Hide-my-email aliases":["Alias « hide-my-email »"],"Quickly unsubscribe from newsletters":["Désabonnez-vous rapidement des newsletters"],"Use your own domain name":["Utilisez votre propre nom de domaine"]},"specialoffer:logos":{"As featured in":["Ils en parlent"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Choisissez une messagerie électronique chiffrée qui protège votre vie privée"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Offre Proton Mail Black Friday - Jusqu'à 40 % de réduction"]},"specialoffer:newmetadescription":{"Get up to 40% off Proton Mail subscriptions this Black Friday. Find great deals on our secure end-to-end encrypted email plans.":["Obtenez jusqu'à 40 % de réduction sur les abonnements Proton Mail à l'occasion du Black Friday. Profitez d'offres exceptionnelles sur nos abonnements de messagerie électronique sécurisée et chiffrée de bout en bout."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["Offre Black Friday Proton Mail | Jusqu'à 40 % de réduction"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["* Facturé ${ TOTAL_SUM } pour la première année"],"*Billed at ${ TOTAL_SUM } for the first 2 years":["*Facturé ${ TOTAL_SUM } pour les 2 premières années"],"30-day money-back guarantee":["Garantie satisfait ou remboursé pendant 30 jours"],"Billed at ${ TOTAL_SUM } for the first 2 years":["Facturé ${ TOTAL_SUM } pour les 2 premières années"],"Billed at ${ TOTAL_SUM } for the first year":["Facturé ${ TOTAL_SUM } pour la première année"],"You save ${ SAVE_SUM }":["Vous économisez ${ SAVE_SUM }"]},"specialoffer:off":{"${ PERCENT_OFF } off":["-${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["J'adore mon ProtonMail"],"My favorite email service":["Ma messagerie électronique préférée"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Merci Proton de nous garder en sécurité dans l'univers complexe d'internet."],"You get what you pay for. In the case of big tech, if you pay nothing, you get used. I quit using Gmail and switched to @ProtonMail":["Vous avez ce pour quoi vous payez. Avec les Big Tech, si vous ne payez rien, vous êtes utilisé. J'ai arrêté d'utiliser Gmail et je suis passée @ProtonMail"]},"specialoffer:time":{"Days":["Jours"],"Hours":["Heures"],"Min":["Min"]},"specialoffer:title":{"And much more":["Et aussi"],"Safe from trackers":["À l'abri des traqueurs"],"Stay organized":["Restez organisé"],"Black Friday email deals":["Offres Black Friday pour la messagerie électronique"],"Don’t just take our word for it":["Ce qu'en disent nos utilisateurs"],"Make your inbox yours":["Faites de votre boîte de réception la vôtre"],"Our story":["Notre histoire"],"Transfer your data from Google in one click":["Transférez vos données depuis Google en un clic"]},"specialoffer:tooltip":{"Access blocked content and browse privately. Includes ${ TOTAL_VPN_SERVERS }+ servers in ${ TOTAL_VPN_COUNTRIES }+ countries, connect up to 10 devices, access worldwide streaming services, malware and ad-blocker, and more.":["Accédez aux contenus bloqués et naviguez en toute confidentialité. Comprend plus de ${ TOTAL_VPN_SERVERS } serveurs dans plus de ${ TOTAL_VPN_COUNTRIES } pays, la possibilité de connecter jusqu'à 10 appareils, l'accès aux services de streaming dans le monde entier, un bloqueur de logiciels malveillants et de publicités et bien plus encore."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Partagez facilement votre calendrier avec votre famille, vos amis ou collègues et consultez des calendriers externes."],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Comprend la prise en charge de 1 domaine de messagerie personnalisé, de 10 adresses e-mail, de 10 alias « hide-my-email », du partage de calendriers et bien d'autres fonctionnalités."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Comprend la prise en charge de 3 domaines de messagerie personnalisés, de 15 adresses e-mail, d'un nombre illimité d'alias « hide-my-email », du partage de calendriers et bien d'autres fonctionnalités."],"Manage up to 25 calendars, mobile apps, secured with end-to-end encryption, 1-click calendar import from Google, and more.":["Jusqu'à 25 calendriers, des applications mobiles, la sécurité avec le chiffrement de bout en bout, l'importation de calendrier en un clic depuis Google..."]},"Status banner":{"Learn more":["En savoir plus"],"Please note that at the moment we are experiencing issues with the ${ issues[0] } service.":["Nous rencontrons actuellement des problèmes avec le service ${ issues[0] }."],"We are experiencing issues with one or more services at the moment.":["Nous rencontrons actuellement des problèmes avec un ou plusieurs services."]},"Status Banner":{"At the moment we are experiencing issues with the Proton VPN service":["Nous rencontrons actuellement des problèmes avec le service Proton VPN."],"Learn more":["En savoir plus"]},"steps":{"Step":["Étape"]},"suggestions":{"Suggestions":["Suggestions"]},"Support":{"Sub category":["Sous-catégorie","Sous-catégories"]},"Support article":{"${ readingTime } min":["${ readingTime } minute","${ readingTime } minutes"],"Category":["Catégorie","Catégories"],"Didn’t find what you were looking for?":["Vous ne trouvez pas ce que vous cherchez ?"],"General contact":["Contact - Général"],"Get help":["Obtenir de l'aide"],"Legal contact":["Contact - Juridique"],"Media contact":["Contact - Média"],"Partnerships contact":["Contact - Partenariats"],"Reading":["Lecture"]},"Support Form Platform option":{"VPN for Android TV":["VPN pour Android TV"],"VPN for Chromebook":["VPN pour Chromebook"]},"Support troubleshooting":{"App version":["Version de l'application"],"Browser":["Navigateur"],"Check if this helps":["Vérifiez si cela vous aide."],"Choose a product":["Choisir un produit"],"Did this solve your issue?":["Cela a-t-il résolu votre problème ?"],"Faster assistance is just a few clicks away":["Quelques clics suffisent pour obtenir une assistance plus rapide"],"How can we help?":["Comment pouvons-nous vous aider ?"],"No, contact support":["Non, contacter le support"],"Please fill out one field after another":["Veuillez remplir les champs l'un après l'autre"],"Please make your selections":["Veuillez faire vos sélections"],"Proton account":["Compte Proton"],"Proton for Business":["Proton for Business"],"Thank you for your feedback":["Nous vous remercions pour votre commentaire."],"What can we help with?":["En quoi pouvons-nous vous aider ?"],"Yes":["Oui"]},"support_modal_search_query":{"Search query":["Recherche"]},"support_search_button":{"Search":["Rechercher"]},"support_search_i_am_looking_for":{"I'm looking for":["Je recherche des informations sur..."]},"SupportForm":{"For a faster resolution, please report the issue from the Bridge app: Help > Report a problem.":["Pour que le problème soit résolu plus rapidement, vous pouvez le signaler à partir de l'application Bridge : Aide > Signaler un bug."],"Information":["Informations"]},"SupportForm:option":{"Account Security":["Sécurité du compte"],"Contacts":["Contacts"],"Custom email domain":["Domaine de messagerie personnalisé"],"Email delivery and Spam":["Distribution des messages et indésirables/spam"],"Encryption":["Chiffrement"],"Login and password":["Identifiant et mot de passe"],"Merge aliases and accounts":["Fusion des alias et des comptes"],"Migrate to Proton":["Migration vers Proton"],"Notifications":["Notifications"],"Other":["Autre"],"Plans and billing":["Abonnements et facturation"],"Proton for Business":["Proton for Business"],"Sign up":["Inscription"],"Storage":["Espace de stockage"],"Users, addresses, and identities":["Utilisateurs, adresses et identités"]},"SupportForm:optionIntro":{"Select a topic":["Choisissez un sujet"]},"swiss_baseed_feature":{"Swiss based":["Basé en Suisse"]},"Testimonial":{"Awards":["Récompenses"],"Customers":["Clients"],"Featured":["Ils en parlent"],"Go to testimonial source":["Accéder aux commentaires"],"Open source of award":["Voir l'information originale concernant ce prix"],"Open source of quote":["Voir l'information originale concernant cette citation"],"Reviews":["Avis"],"Videos":["Vidéos"],"Watch on TikTok":["Regarder sur TikTok"],"Watch on YouTube":["Regarder sur YouTube"]},"TestimonialCategory":{"Awards":["Récompenses"],"Customers":["Clients"],"Featured":["Ils en parlent"],"Media":["Média"],"Reviews":["Avis"],"Videos":["Des vidéos"]},"Text":{"If you need help, check out our ${ supportLink }.":["Si vous avez besoin d'aide, consultez notre ${ supportLink }."],"The page you’re looking for might have been removed, or it could be an\nold link.":["La page recherchée a peut-être été retirée ou le lien utilisé n'est plus valide."],"Your question may already have an answer in our knowledge base:":["La réponse à votre question se trouve peut-être déjà dans notre base de connaissances :"]},"Title":{"On this page":["Sur cette page"],"Related articles":["Articles similaires"],"Share ${ thisPage }":["Partagez ${ thisPage }"],"Switch to Proton Pass - Contact us":["Passez à Proton Pass - Contactez-nous"],"Thank you!":["Merci !"],"this page":["cette page"]},"Tooltip":{"More information":["Plus d'informations"]},"tooltip_vpn":{"Access blocked content and browse privately. Includes ${ TOTAL_VPN_SERVERS }+ servers in ${ TOTAL_VPN_COUNTRIES }+ countries, highest VPN speed, ${ TOTAL_VPN_CONNECTIONS } VPN connections, worldwide streaming services, malware and ad-blocker, and more.":["Accédez aux contenus bloqués et naviguez en toute confidentialité. 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Introducing Proton Mail Bridge, email encryption for Outlook, Thunderbird, and Apple Mail | Proton
Today we are officially launching Proton Mail Bridge, which brings easy-to-use email encryption to desktop email clients.
Ever since the day that we first got the idea to create Proton Mail, one of the most enduring challenges has been how to do email security right while simultaneously making encrypted email easy enough to use for normal people. Since our early days working from the CERN cafeteria(nouvelle fenêtre), we have been working tirelessly to address this specific problem.
In the years since, we have made many great strides towards creating usable encrypted email, first with Proton Mail’s webmail interface and then with our award-winning(nouvelle fenêtre)iOS(nouvelle fenêtre) and Android(nouvelle fenêtre) secure email apps. However, one of our goals has always been to bring easy-to-use encrypted email to desktop. The problem is formidable. Desktop systems encompass multiple operating systems with dozens of popular email clients with their own adherents, and virtually none of them natively speak PGP, the email encryption standard upon which Proton Mail is built.
Around two years ago, we created a small task force to tackle this challenge. Today, we are finally ready to present Proton Mail Bridge(nouvelle fenêtre).
What is the Proton Mail IMAP/SMTP Bridge?
In a single sentence, Proton Mail Bridge is an application that allows you to use your Proton Mail encrypted email account with your favorite desktop email client such as Thunderbird, Apple Mail, or Outlook, while simultaneously retaining the zero-access encryption and end-to-end encryption that Proton Mail provides. The best part is that this does not require modifying your email client or making changes to your existing workflow. Use email like you have always used it, and the Bridge will automatically encrypt and decrypt messages in the background.
How does the Proton Mail Bridge work?
The Bridge is an app that you download(nouvelle fenêtre) and install locally on your desktop or laptop computer and it runs automatically in the background.
The Bridge essentially acts like a local email server (using the IMAP and SMTP protocols) and interacts with email clients also installed locally on your desktop computer. As a result, all encryption and decryption occur locally and thus the benefits of end-to-end encryption remain. The Bridge communicates with Proton Mail’s encrypted email server via our API, which supports end-to-end encryption, while email clients can communicate directly with the Bridge via standard IMAP and SMTP. In this way, standard email clients which do not natively support end-to-end encryption can support encryption without modification. Another way to think of it is that the Proton Mail Bridge translates end-to-end encrypted email data into a language that any email client can understand, thus “bridging” the gap between Proton Mail’s end-to-end encryption and your standard email client.
One of the powerful benefits of using the Bridge and email apps like Thunderbird, AppleMail, and Outlook is being able to use full-body text search within your encrypted emails. The Bridge decrypts messages as they arrive in your computer and delivers them to your desktop email client. These local copies are stored on your computer, so the search features of your desktop client work normally and you can search within your encrypted emails.
Another powerful benefit of the Bridge is being able to have multiple accounts added to an email client. For example, many users will have both a Gmail account and a Proton Mail account. In this scenario, you could simply drag messages between accounts using Thunderbird (for example). This essentially enables you to drag and drop an existing Gmail account into a new Proton Mail account as a way of doing “Account Import” (a dedicated account import and export tool is currently under development). Similarly, for users who want a backup of their Proton Mail data, most native email clients let you mass export your data and download it. You can also have multiple Proton Mail addresses and accounts in a single email client, and move messages between your Proton Mail accounts.
Threat Model
The Bridge preserves end-to-end email encryption, and also zero-access encryption (meaning that even we cannot read your emails). However, the Bridge does not protect your emails from end-point compromise (e.g. compromised laptop). Since the Bridge decrypts data locally, it’s important to ensure that your computer is safe. If someone breaks into your computer while using the Bridge, the unencrypted data could potentially be viewed as well.
During the installation process, the Bridge will auto-generate a “Bridge Password”. This Bridge Password is used to setup and configure your email clients. In this way you don’t need to trust your email client with your secret Proton Mail password.
JavaScript Cryptography and Open Source
Because the Bridge is locally installed, it is like our mobile apps in that it does not do decryption in a browser. Therefore, the Bridge also guards against the threat vector of somebody compromising the connection between you and Proton Mail in order to send you bad JavaScript code, or Proton Mail getting compromised and serving a malicious webpage to users.
Furthermore, after the technical documentation of the Proton Mail Bridge code is done, we will be releasing the source code of the Bridge, so that you can even compile it yourself instead of getting the binaries from us, so there is even less need to trust us. This is an important step in our work to eliminate Proton Mail itself as a threat vector.
Using the Proton Mail Bridge
The Bridge software is easy to set up and use. The setup process consists of:
Installing the Bridge app
Adding your Proton Mail account to the Bridge
Adding your Proton Mail account to your email client (Thunderbird, Apple Mail, Outlook)
Configuring your email client’s settings (ports, password, etc).
Currently, the officially supported email clients are Thunderbird, Apple Mail, and Outlook, on both Windows and MacOS (Linux is coming in Spring of 2018). However, in theory, any IMAP email client can work with the Bridge, and in our beta testing, many were shown to work. If you are a paid Proton Mail user, you can immediately get started here:
Finally, we would like to thank the thousands of Proton Mail users who participated in the Bridge Beta over the past year. Your support and feedback was invaluable towards bringing the Bridge to fruition, and we look forward to making Proton Mail even better for the community.
Proton Mail and Proton VPN are funded by community contributions. If you would like to support our development efforts, you can upgrade to a paid plan. Thank you for your support!
Sécurisez votre messagerie, protégez votre vie privée
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and reputational damage? Find out how Proton Pass for Business can help you stay
safe.