Where Are My Thunderbird Email Files Stored on Windows & Mac?

Bhawna Barwal | Software Technology thunderbird | 4 minutes read | Modified on: 14-11-2026

Mozilla Thunderbird is a widespread desktop email client that allows users to manage multiple email accounts, store messages, organize folders, and access their emails from one place. Whether you use Thunderbird for personal communication or professional purposes, knowing where your email files are stored is important. You may need to locate your Thunderbird email files when creating a backup, transferring emails to another computer, troubleshooting an issue, or migrating your mailbox to a different email application.

But the question is: Where are my Thunderbird email files stored, and how can I find them easily?

In this blog, we will explain where Thunderbird stores email files on different operating systems, how to locate the Thunderbird profile folder.

Let’s Know Where Are My Thunderbird Email Files Stored

Mozilla Thunderbird stores emails, account settings, address books, extensions, and other user information inside a folder called the Thunderbird Profile Folder.

The profile folder contains important mailbox data, including emails, attachments, account configurations, and other settings.

Thunderbird generally stores its profile data in the following default locations.

Thunderbird Email File Location on Windows. If you are using Thunderbird on a Windows computer, your profile folder is usually stored at:

C:\Users\Username\AppData\Roaming\Thunderbird\Profiles\

Inside this folder, you will find a profile directory with a name similar to:

xxxxxxxx.default-release

This folder contains your Thunderbird mailbox files and other profile information.

How to Find Thunderbird Email Files on Windows?

  1. Press Windows + R on your keyboard.
  2. Type %APPDATA%\Thunderbird\Profiles\.
  3. Press Enter.
  4. Open your Thunderbird profile folder.
  5. Look for folders such as Mail or ImapMail.
  6. You can find your stored email data inside these folders.

Thunderbird Email File Location on Mac

If you use Thunderbird on macOS, the default profile location is:

~/Library/Thunderbird/Profiles/

To locate your Thunderbird email files on Mac:

  1. Open Finder.
  2. Click Go in the menu bar.
  3. Select Go to Folder.
  4. Enter ~/Library/Thunderbird/Profiles/.
  5. Press Enter.
  6. Open your profile folder to access your Thunderbird data.
  7. The Library folder may be hidden by default, so using the Go to Folder option is an easy way to access it.

How to Find the Thunderbird Profile Folder Using Thunderbird?

If you are unable to locate the profile folder manually, Thunderbird provides an easier way to find it. Follow these steps:

  1. Open Mozilla Thunderbird.
  2. Click the menu button (three horizontal lines).
  3. Select Help.
  4. Choose Troubleshooting Information.
  5. Find the Profile Folder section.
  6. Click Open Folder (or Show in Finder on Mac).
  7. Thunderbird will automatically open the location where your profile data is stored.
  8. This method is particularly helpful because it takes you directly to the active profile folder.

How to Back Up Email Files?

Creating a backup of your Thunderbird emails is important to prevent accidental data loss.

You can back up complete Thunderbird profile by following these steps:

  1. Close Mozilla Thunderbird completely.
  2. Navigate to your Thunderbird profile folder.
  3. Copy the entire profile folder.
  4. Paste it into an external hard drive, USB drive, or another secure storage location.
  5. Keeping a complete profile backup helps preserve your emails, account settings, address books, and other profile information.

How Professional Software Solution Can Help in This?

Finding Thunderbird email files is relatively simple, but managing or migrating those files can become challenging when you need to access emails in another email application. In this case CubexSoft Thunderbird Converter becomes useful. The software solution designed to convert Thunderbird mailbox data into other supported file formats. It helps users make their email data accessible in applications that may not directly support Thunderbird’s mailbox format.

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Key Benefits of the Software

Convert Thunderbird Emails into Other Formats: The tool helps to export Thunderbird emails into PDF, EML, MSG, PST, and other supported formats.

Simplify Email Migration: If you want to move Thunderbird emails to another email client or platform, conversion can make the migration process easier.

Maintain Email Information: This reliable software aims to preserve important email information, including sender and recipient details, subject lines, dates, message content, and attachments.

Handle Multiple Emails: Instead of manually saving emails one by one, tool supports batch conversion features allow users to process multiple emails together.

Make Emails Easier to Access: Converting Thunderbird emails into commonly used formats can make them easier to open, share, archive, and manage.

When Should You Use a Professional Software?

The software is useful in situations such as:

  • When migrating Thunderbird emails to Outlook.
  • When you need to convert Thunderbird MBOX files into PST format.
  • When you want to save important emails in PDF format.
  • When you need to export emails into EML or MSG format.
  • When creating an accessible email archive.
  • When moving mailbox data to another supported email platform.

Let’s Wrap Up

Finding your Thunderbird email files is not difficult once you know where the profile folder is located. Windows users can generally find their data under the AppData directory, and Mac users can access it through the Library folder. You can also use Thunderbird’s Troubleshooting Information page to open your active profile folder directly. However, if your goal is to migrate Thunderbird emails, convert mailbox files, or access your messages in another application, the above suggestions can make the process more convenient. The tool is simply accessible on Windows and Mac Operating Systems.