ProtonMail Bridge is an application that seamlessly encrypts and decrypts your mail as it enters and leaves your computer. It allows you to fully integrate your ProtonMail account with most clients that support IMAP and SMTP protocols, with official support for Microsoft Outlook, Mozilla Thunderbird and Apple Mail.
ProtonMail Bridge also allows you to import emails into your ProtonMail account from other email accounts connected to the same client, as well as run full-text searches of your ProtonMail emails.
ProtonMail Bridge is available on macOS, Windows, and Linux.
You can download the app, find answers to frequently asked questions and get full support on the ProtonMail Bridge homepage. To use ProtonMail Bridge, you need any paid ProtonMail plan. if you don’ty have one, you can upgrade.
ProtonMail Bridge uses the SMTP and IMAP protocols. We do not offer POP3 support, but ProtonMail Bridge downloads all your emails into your email client, and you can export them from there.