Where is Thunderbird MBOX Files Located? This is one of the most common questions Thunderbird users ask when they want to back up their emails, move them to another computer, recover old messages or simply want to access their mailbox files manually.
Unlike many email clients Mozilla Thunderbird stores emails locally in MBOX files inside your profile folder. These files contain all your email messages, folders and mailbox data. If you know the correct Thunderbird MBOX Files Location well it becomes much easier for you to create backups, migrate your mailbox or recover all your important emails after reinstalling Windows or Thunderbird.
In this guide we will discuss and understand where Thunderbird MBOX Files Located, where Thunderbird data files are saved by default in Windows 11 and where Thunderbird emails stored in Windows 10 also we will learn what to do if you cannot find your MBOX files.
Where is Thunderbird MBOX Files Located in Windows?
If you installed Thunderbird using default settings then your MBOX files are stored inside your Thunderbird profile folder. Each email folder such as Inbox, Sent, Drafts or custom folders are saved as an individual MBOX file.
And for most of the Windows users the default location is:
C:\Users\YourUserName\AppData\Roaming\Thunderbird\Profiles\ProfileName.default-release\
Inside the Profiles folder you can simply open your profile folder (for example – 8gh2kx1a.default-release). Then just need to navigate to:
- Mail – for POP email accounts
- ImapMail – for IMAP email accounts
Here you will find mailbox files such as Inbox, Sent, Drafts, Trash and Archive. These are your actual MBOX files and they are stored without any file extension.
This is the default Thunderbird MBOX Files Location for almost every modern Thunderbird installation.
Tip: The AppData folder is hidden by default so if you cannot see it then you should enable Hidden Items from the View menu in File Explorer.
Does Thunderbird Store MBOX Files in Different Locations on Windows 11 and 10?
No. The thunderbird data file location windows 11 is the same as where are thunderbird emails stored in windows 10. Mozilla Thunderbird uses the same profile structure on both operating systems.
Default profile location is:
C:\Users\YourUserName\AppData\Roaming\Thunderbird\Profiles\
Whether you are using Windows 11 or Windows 10 operating system you will find mailbox files such as Inbox, Sent, Drafts, Trash and other folders stored as MBOX files without any file extension.
Thunderbird Supernova MBOX File Location on Windows
If you are using Mozilla Thunderbird Supernova (version 115 or later) then you might wonder whether the email storage location has changed. But good news is that only the user interface has been redesigned but the way Thunderbird stores emails remains the same. On Windows Thunderbird Supernova MBOX file is still located in your Thunderbird profile folder.
Understanding Thunderbird Profile Folder Structure
There are a lot of users searching Where are Thunderbird MBOX files because they expect to find a single “Emails” folder. But they need to understand that Thunderbird organizes its data differently which you can check in the table given below for more information.
| Folder | Purpose |
|---|---|
| Stores POP account MBOX files | |
| ImapMail | Stores IMAP mailbox files |
| Local Folders | Stores local mailboxes and archives |
| prefs.js | Thunderbird account settings |
| abook.sqlite | Address Book |
| calendar-data | Calendar information |
Understanding this complete structure makes it much easier for you to quickly identify what are correct mailbox files when you are creating backups or troubleshooting Thunderbird issues.
How to Find Thunderbird MBOX Files Manually
If you cannot locate your mailbox files just follow these simple steps below:
- Close Mozilla Thunderbird.
- Open File Explorer.
- Press Windows + R.
- And Type:- %AppData%\Thunderbird
- Press Enter.
- Open the Profiles folder.
- Open the folder ending with .default-release.
- Now Browse to Mail or ImapMail.
You should now see your Thunderbird mailbox files.
This is one of the fastest methods to find Thunderbird MBOX Files Location without manually browsing through hidden folders.
What If You Cannot Find Your Thunderbird MBOX Files?
Sometimes users cannot locate their mailbox files even after checking default profile folder. This usually happens due to the profile has been moved, AppData folder is hidden or Thunderbird is using a different profile. In such situation you must try these simple checks:
- Verify that Hidden Items are enabled in File Explorer.
- Make sure you are opening the correct Windows user account.
- Check whether Thunderbird is using another profile.
- Search your computer for folders ending with .default-release or .default.
- And if you previously moved your profile then check custom location.
If your profile folder exists but Mail or ImapMail folder is missing this simply indicates your profile may be incomplete or damaged.
How to Find the Active Thunderbird Profile
If you have multiple Thunderbird profiles then it is important for you to identify which one is currently in use. And to find this you just need to follow these simple steps:
- Open Thunderbird.
- Click Help.
- Select More Troubleshooting Information.
- Under Application Basics, locate Profile Folder.
- And Click Open Folder.
This will open the exact folder Thunderbird is currently using. From there you can access Mail or ImapMail folder and locate your MBOX files easily.
This is a simple way to confirm Where Thunderbird MBOX Files are located especially if you have multiple profiles on your computer.
How to Open Thunderbird MBOX Files After Finding Them
Finding your MBOX files is only the first step. Windows cannot open MBOX files directly and opening them with a text editor only displays your raw email data.
If you want to read your emails, search messages, print conversations or you want to export them into other formats then you need a professional viewer. You can use SysTools Free MBOX Viewer to view your email data and Upgrade to Pro Plus Version for advance features like:
Download Now Upgrade to Pro Plus
- Open single or multiple Thunderbird MBOX files.
- Preview emails and attachments without Thunderbird.
- Search emails using subject, sender, recipient, date or keywords.
- Use Exact Search and advanced AND/OR search operators to quickly find specific emails.
- Print selected emails directly.
- Export MBOX emails to PDF, PST, EML, MSG and CSV with keeping original folder structure.
FAQs
Q1. Does Thunderbird Supernova use a different MBOX file location?
No. Although Thunderbird Supernova introduced a redesigned interface only and email storage location remains the same.
Q2. Can I open Thunderbird MBOX files without Thunderbird?
Yes – You can use SysTools dedicated viewer to open and read Thunderbird mailbox files without installing Thunderbird.
Q3. What happens if my Thunderbird profile folder is deleted?
If your profile folder has been accidentally deleted then you can not access .mbox files. You must stop using the affected drive immediately to avoid overwriting the deleted data.
Conclusion
Knowing Where is Thunderbird MBOX Files Located makes it much easier for you to back up, restore or migrate your Thunderbird emails. Once you locate your MBOX files now you can easily access it, manage or simply export them whenever needed. And you must Keep regular backups of your Thunderbird profile this will help you protect your important email data from unexpected loss.
