(new window) What is the Proton Mail IMAP/SMTP Bridge? Today, we are finally ready to present Proton Mail Bridge (new window). 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.Īround two years ago, we created a small task force to tackle this challenge.
However, one of our goals has always been to bring easy-to-use encrypted email to desktop. 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 (new window) iOS (new window) and Android (new window) secure email apps.
Since our early days working from the CERN cafeteria (new window), we have been working tirelessly to address this specific problem. If errDecrypt != nil & errDecrypt != openpgperrors.Last update on NovemPublished on DecemToday we are officially launching Proton Mail Bridge, which brings easy-to-use email encryption to desktop email clients.Įver 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. To the best of my understanding, the wrapping happens client-side (which makes sense, given above statement that no HTML is added in the web client) here: This breaks compatibility with custom Mail clients, which could otherwise decrypt these mails. However, as stated per the issue, Protonmail wraps Mails it cannot decrypt into a layer of HTML, to display an error message to the user. This would be acceptable, if I could use my Mail client to read these mails. For this reason, it often happens that I cannot use the web client to read PGP-encrypted messages sent to me by third parties. In contrast, many mail clients, probably most notably Thunderbird as of version 78, encrypt the Mail subject when using a built-in PGP feature (the Enigmail-stripped version does this automatically, currently without the option to opt out (7)). Gonna throw in my 2 cents here as well, as I believe that this problem spans beyond using PGP keys that Protonmail doesn't "hold" (obviously they're private to the user, but stored in encrypted form on the Protonmail servers).Īs stated in the Protonmail Wiki, Email subjects are not encrypted, as this does not align with the PGP standard.
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