How to Open .MSG Files on Mac: Quick & Easy Guide

Opening .msg files on Mac can feel confusing if you are used to Windows email clients, but the process is straightforward once you know the right tools. These files typically come from Microsoft Outlook for Windows and contain the full email, including headers and attachments.

This guide walks you through native options, third-party viewers, and conversion methods so you can read any .msg file on macOS quickly and reliably.

Using Outlook for Mac to Open .msg Files

Install and Link Your Outlook Account

Outlook for Mac can open .msg files directly when they are attached to emails or saved locally. If you already use an Exchange or Office 365 account, this method requires only linking your account once.

Drag and Drop the File Into Outlook

Locate the .msg file in Finder, then drag it into the message list or open it from the Outlook menu. Outlook renders the full message, including embedded images and formatting, similar to how it appears in Windows.

Opening .msg Files With MsgViewer Pro

Download and Install the App

MsgViewer Pro is a dedicated Mac application designed to open .msg, .pst, and related Outlook formats without requiring Outlook itself. After installing, launch the app and grant necessary permissions in System Settings.

Load and Inspect Messages

Open the .msg file through File > Open or by double-clicking it. The viewer shows sender, recipients, timestamps, and attachments in a clean interface that preserves original formatting and inline images.

Converting .msg Files to Readable Formats

Using an Online Converter Like Zamzar

If you prefer not to install software, online converters such as Zamzar let you upload a .msg file and convert it to PDF, EML, or HTML. The process is fast, but avoid sensitive emails since files are processed on remote servers.

Exporting to PDF for Safe Sharing

After conversion, download the PDF and verify that formatting, tables, and images look correct. This approach is ideal when you need to share the content with colleagues who cannot open .msg files directly.

Reading .msg Files With Thunderbird

Install Thunderbird and the ImportExportTools NG Add-on

Mozilla Thunderbird is free and works on macOS. By adding the ImportExportTools NG extension, you can import .msg files directly into a local folder and read them like any other email.

Verify Headers and Attachments

Once imported, check the message headers and confirm that all attachments are present. Thunderbird may not perfectly replicate Outlook’s styling, but it reliably displays core content and metadata.

Recommended Workflow for Handling .msg Files on Mac

• Try dragging the .msg file into Outlook for Mac first if you already have it installed.
• Use MsgViewer Pro for a dedicated, offline viewing experience without Outlook.
• Convert to PDF via Zamzar only for non-sensitive documents that need quick sharing.
• Use Thunderbird with ImportExportTools NG for a free and flexible long-term solution.
• For batch work, consider command-line tools or scripts to automate conversion.