Proton Mail Bridge
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Troubleshooting “failed to parse message” errors
While using Proton Mail Bridge, you may receive a "failed to parse message" error message. This article will cover how to troubleshoot them.
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How to resolve the “Invalid Return Path” error when sending messages from your email client
Here's how to troubleshoot the “Invalid return path”error when you attempt to send a message from your email client.
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How to troubleshoot not receiving new messages in your email client
If you stop receiving new messages in your email client while using Proton Mail Bridge, this article will help you troubleshoot the issue.
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How to troubleshoot messages received with a delay in your email client
While using Proton Mail Bridge, you may receive messages in your email client with a delay. Here's how to fix it.
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Comprehensive guide to Bridge settings
This guide will show how to optimize your Proton Bridge settings. You'll learn about automatic updates, startup options, alternative routing, and more.
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How to troubleshoot missing messages in your email client
Learn how to troubleshoot missing messages in your email client when using Proton Bridge with this step-by-step guide to resynchronize with Proton servers.
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How to resolve connection issues in Bridge
In this article, we will cover the typical causes of connection issues with Proton Mail Bridge and provide suggested solutions to each of them.
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How to troubleshoot “This computer only” folders in Outlook for Windows
This article explains “This computer only” folders, why they appear next in Outlook, and how to resolve it.
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How to resolve issues with “Checking mail server capabilities” notice in Thunderbird
This article explains what the “Checking mail server capabilities...” notice means when using Bridge and Thunderbird and how you can resolve it.
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How to remove all cache and configuration files when uninstalling Proton Mail Bridge
When you are uninstalling Proton Mail Bridge, some files might be left over. This article will show you the locations of these files and how to remove them.
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What is the Recovered Messages folder in Bridge (and your email client)?
In certain cases, a folder can appear in your email client called “Recovered Messages” which contains messages in it you might recognize.
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How to report a problem from Proton Mail Bridge
If you ever have a problem with Proton Mail Bridge or you have a suggestion to improve the app, you can send us feedback in a report.
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Update required
Occasionally, we'll release versions of our software that are required for all users.
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Why you need Proton Mail Bridge
With Proton Mail Bridge, you can access your Proton Mail emails using your regular desktop email client while maintaining secure encryption.
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How to Import and Export MBOX and EML files using Proton Mail Bridge and Mozilla Thunderbird
This article with explain how to import and export MBOX and EML files using Proton Mail Bridge and Mozilla Thunderbird.
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- Using Bridge
How to resolve connection issues in Bridge
In this article, we will cover the typical causes of connection issues with Proton Mail Bridge and provide suggested solutions to each of them.
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- Proton Mail Bridge
- Using Bridge
How to remove all cache and configuration files when uninstalling Proton Mail Bridge
When you are uninstalling Proton Mail Bridge, some files might be left over. This article will show you the locations of these files and how to remove them.
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- Proton Mail
- Proton Mail Bridge
- Using Bridge
What is the Recovered Messages folder in Bridge (and your email client)?
In certain cases, a folder can appear in your email client called “Recovered Messages” which contains messages in it you might recognize.
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Bridge CLI (command line interface) guide
We created a comprehensive guide for our Bridge command line tool for Linux. It lists all the most important commands and explains what they do.
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Labels in Bridge
The email clients supported by Bridge interpret Proton Mail labels as folders. So when you configure your Proton Mail account with your email client, your existing labels will appear as folders within the Labels folder.
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Are my emails encrypted via Proton Mail Bridge?
Messages exchanged between Proton Mail accounts via Bridge are end-to-end encrypted just like they are in our web and mobile apps.
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Automatically open Proton Mail Bridge on startup
The default setting in Bridge is to automatically start when you turn on your computer. In some cases, you may see an error indicating that autostart is not possible due to your computer’s permissions.
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How to manually update Proton Mail Bridge
Proton Mail Bridge usually updates automatically in the background. Learn how to update it manually if it doesn’t.
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Difference between combined addresses mode and split addresses mode
If you're using Proton Mail with a third-party email client, Proton Mail Bridge can sort multiple addresses into the same folders or different folders.
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Automatic Update and Bridge
The Bridge app will automatically download and install updates, ensuring that you are always using the latest version. You can also turn this feature off.
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Sending PGP emails in Proton Mail Bridge
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- Introduction to Bridge
System requirements for Proton Mail Bridge
Proton Mail Bridge is now officially supported on Windows 10+ (64 bit), macOS 10.5 (Catalina)+, and Linux.
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- Introduction to Bridge
How to install Proton Mail Bridge
Learn how to install Proton Mail Bridge to use third-party email clients like Outlook, Thunderbird, and Apple Mail with Proton Mail.
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- Introduction to Bridge
IMAP, SMTP, and POP3 setup
Proton Mail Bridge allows you to integrate your inbox with most mail clients that support IMAP and SMTP protocols.
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- Installation on Windows
Proton Mail Bridge Microsoft Outlook 2013 for Windows setup guide
How to configure Microsoft Outlook 2013 for Windows to use with Proton Mail Bridge.
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- Installation on Windows
Proton Mail Bridge Microsoft Outlook 2016 for Windows setup guide
How to configure Microsoft Outlook 2016 for Windows to use Proton Mail Bridge
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- Installation on Windows
Proton Mail Bridge Microsoft Outlook for Windows 2019 setup guide
How to configure Microsoft Outlook 2019 for Windows to use Proton Mail Bridge
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- Installation on macOS
Proton Mail Bridge new Outlook for macOS setup guide
Learn how to set up the new Outlook app for macOS with Proton Mail Bridge to send and receive mail from your Proton Mail account.
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- Installation on macOS
Proton Mail Bridge Microsoft Outlook 2019 for macOS setup guide
How to configure Microsoft Outlook 2019 for macOS to use Proton Mail Bridge.
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- Installation on macOS
Proton Mail Bridge Microsoft Outlook 2011 for macOS setup guide
How to configure Microsoft Outlook 2011 for macOS to use Proton Mail Bridge.
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- Installation on macOS
Proton Mail Bridge Microsoft Outlook 2016 for macOS setup guide
How to configure Microsoft Outlook 2016 for macOS to use Proton Mail Bridge
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- Proton Mail Bridge
- Installation on macOS
Why you need to install a certificate for Apple Mail with Proton Mail Bridge
We explain what Apple Mail requires you to confirm our self-signed certificate before it will accept it.
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- Installation on macOS
Warning when installing Proton Mail Bridge on macOS
We explain why you may see a warning when you install the Proton Mail Bridge profile on macOS.
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- Installation on Linux
Installing Proton Mail Bridge for Linux using an RPM file
This article explains how to verify and install an RPM package on your Linux device.
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- Installation on Linux
Verifying the Proton Mail Bridge package for Linux
For your security, we advise you verify the Bridge software you downloaded came from Proton Mail. Our short guide explains how to do that.
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- Installation on Linux
Installing Proton Mail Bridge for Linux using a DEB file
This article explains how to verify and install the DEB package on your Linux device.
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- Installation on Linux
Proton Mail Bridge for Linux
Proton Mail Bridge for Linux enables you to integrate your Proton Mail account with IMAP and SMTP email clients like Thunderbird and Evolution.
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- Installation on Linux
Proton Mail Bridge: How to fix a missing system tray icon in Linux
When Proton Mail Bridge is running you should see an icon for it in the Linux system tray. If you don’t, follow these instructions.
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- Installation on Linux
Installing Proton Mail Bridge for Linux using a PKGBUILD file
This article explains how to verify and install an PKGBUILD package on your Linux device.
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- Email app configuration
How to configure your email client for Proton Mail Bridge
Setup guide for configuring Outlook, Thunderbird, and Apple Mail email clients for use with Proton Mail Bridge in Windows, macOS, and Linux.
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- Email app configuration
Proton Mail Bridge Thunderbird setup guide for Windows, macOS, and Linux
How to set up Mozilla Thunderbird with Proton Mail Bridge in Windows, macOS, and Linux.
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- Email app configuration
Proton Mail Bridge Apple Mail setup guide
How to configure Apple Mail for macOS to use Proton Mail Bridge
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- Email app configuration
Email clients supported by Proton Mail Bridge
Proton Mail Bridge integrates Proton Mail with IMAP and SMTP email clients. We've optimized Bridge for Thunderbird, Apple Mail, and Outlook.
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- Proton Mail Bridge
- Common issues and questions
Comprehensive guide to Bridge settings
This guide will show how to optimize your Proton Bridge settings. You'll learn about automatic updates, startup options, alternative routing, and more.
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- Proton Mail
- Proton Mail Bridge
- Common issues and questions
How to troubleshoot missing messages in your email client
Learn how to troubleshoot missing messages in your email client when using Proton Bridge with this step-by-step guide to resynchronize with Proton servers.
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- Proton Mail
- Proton Mail Bridge
- Common issues and questions
How to resolve connection issues in Bridge
In this article, we will cover the typical causes of connection issues with Proton Mail Bridge and provide suggested solutions to each of them.
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- Proton Mail
- Proton Mail Bridge
- Common issues and questions
How to report a problem from Proton Mail Bridge
If you ever have a problem with Proton Mail Bridge or you have a suggestion to improve the app, you can send us feedback in a report.
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- Proton Mail
- Proton Mail Bridge
- Common issues and questions
Proton Mail Bridge connection issues with Thunderbird, Outlook, and Apple Mail
Learn how to fix common issues when connecting email clients like Thunderbird, Outlook, and Apple Mail to Proton Mail using Bridge.
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- Common issues and questions
Thunderbird: ‘Connection to server timed out’ error
In Thunderbird, you may receive a “connection to server timed out” error when sending or receiving a message. You may be able to prevent this error by increasing the length of time the email client will wait for a response from the server.
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- Common issues and questions
Exceeding the Proton free plan limits
Access to your account may be limited if you exceed the Proton free plan limits.
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- Common issues and questions
Proton Mail Bridge New Outlook for Windows set up guide
New Outlook's unexpected changes have made it technically incompatible with Proton Mail Bridge. Here's how to navigate the issue.
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- Common issues and questions
Invalid password error while setting up email client
Learn why you may get a password error message while setting up Proton Mail Bridge to connect your email client to Proton Mail.
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- Common issues and questions
How to fix “IMAP or SMTP port error” on Proton Mail Bridge
Proton Mail Bridge uses ports 1143 and 1025 by default, but sometimes they are already in use. Learn how to change ports for Bridge.
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How to fix an “IMAP Login failed” warning on Proton Mail Bridge
In this guide, we show you how to fix the “IMAP Login failed” error on Proton Mail Bridge.
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How to fix a “can’t move cache” error on Proton Mail Bridge
In this guide, we show you how to fix a “can't move cache” error on Proton Mail Bridge.
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How to fix an “internal error” warning on Proton Mail Bridge
In this guide, we show you how to fix the ”Internal error” synching warning on Proton Mail Bridge.
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How to fix “the address list has changed” warning on Proton Mail Bridge
Learn how to fix a Proton Mail Bridge warning after you’ve changed your Proton Account email addresses.
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How to fix “cannot access keychain” on Proton Mail Bridge
f you see the “cannot access keychain error”, Bridge has failed to access your keychain and therefore can’t decrypt your emails.
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How to fix Proton Bridge login errors
How to fix some common login errors you might run into when logging in to Proton Mail Bridge Linux.