ProtonMail Bridge Microsoft Outlook 2011 for macOS setup guide

ProtonMail Bridge is an open-source application that allows you to fully integrate your ProtonMail account with any program that supports IMAP and SMTP. This includes Microsoft Outlook, Mozilla Thunderbird, and Apple Mail.

It runs in the background on your computer and seamlessly encrypts and decrypts your mail as it enters and leaves your computer.

Before you configure Outlook to use ProtonMail, you must first sign up for a ProtonMail account and download and install the ProtonMail Bridge on your computer.

Once you’ve installed and added your account(s) to ProtonMail Bridge, you will need to configure your email client. ProtonMail Bridge works with most email clients and applications that support IMAP / SMTP connections. In this guide, we provide step-by-step instructions for configuring Outlook 2011 for use with ProtonMail Bridge on your Mac.

How to set up Outlook 2011 for macOS for use with ProtonMail Bridge

1. Open Outlook and go to Outlook → Preferences → Accounts. Click Other Email.

Add an other email account

2. Enter the account details given in the ProtonMail Bridge app.

Enter your ProtonMail Bridge account details

Note: Do not use your regular ProtonMail account details. You must use the account details provided in ProtonMail Bridge under Mailbox details

Your ProtonMail Bridge account details

3. Click More Options… and set Authentication to Use Incoming Server Info. Click OK.

Set additional options

4. Click Advanced and go to the Folders tab. Set Sent to Don’t store a copy of sent messages. ProtonMail Bridge will copy items into your Sent folder automatically when successfully sent.

Set Drafts to Drafts (On My Computer) to store drafts locally.

Junk and Trash should use Outlook’s default settings (shown below).

Set Drafts to Drafts (On My Computer)

Press OK to complete setup. Outlook 2011 is now ready to use.


1. In split addresses mode every IMAP account that you set up with ProtonMail Bridge is address-specific, and will only be able to send and receive emails from the address it is set up with.

You can add any number of addresses to Outlook, but wait for one address to download before adding another.

Split address mode

2. In combined address mode, Outlook has no way to add more than one address to send with.

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