MBOX Types

Leading MBOX Type

.MBOX

File Format:	.mbox
Classification:	E-mail Mailbox

This type of file is used by diverse e-mail applications. It contains a group of emails that may be viewed individually. The file has been replaced by .DBX and MBOX files in the latest e-mail applications.

Created by:	Unknown Developer
Division:	Data Files
Subkey:	HKEY_CLASSES_ROOT\.mbox

Software Programs That Open The E-mail Mailbox:

Mozilla Thunderbird by Mozilla

Windows

Mac

Linux

Apple Mail by Apple

	Mac
	iOS

IBM Lotus Notes by IBM

Windows

Mac

Calypso Email by Rose City Software

Windows

Optional Offer for FileViewPro by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

Troubleshooting Problems Opening MBOX Files

Typical MBOX Opening Challenges

Missing Mozilla Thunderbird

When trying to open your MBOX file, you get the error "Can't Open MBOX File Type". If so, it typically means that you don't have Mozilla Thunderbird installed for %%os%%. This will prevent you from double-clicking to open the MBOX file because the OS doesn’t know how to handle it.

Tip: When another MBOX application is installed, you can choose to open it by selecting "Show Apps" and using that program.

Obsolete Version of Mozilla Thunderbird

In other instances, your E-mail Mailbox file version may not be supported by your version of Mozilla Thunderbird. Visit the Mozilla website to download (or purchase) the latest version of Mozilla Thunderbird. Most of the time your E-mail Mailbox file was created by a newer Mozilla Thunderbird than what you have installed.

Tip: If you right-click on your MBOX file, then select "Properties" (Windows) or "Get Info" (Mac), you can obtain hints about what version you need.

Regardless, most of the MBOX file opening problems relate to not having the right version of Mozilla Thunderbird installed.

Other Causes of MBOX File Opening Problems

In the majority of cases, installing the right version of Mozilla Thunderbird will resolve your issue. There can be other issues - unrelated to software - preventing you from opening MBOX files. Problems unrelated to software:

• File references in the Windows Registry for MBOX are wrong
• Unintentional removal of the description of the MBOX file inside the Windows Registry
• Corrupt install of Mozilla Thunderbird or other MBOX-related program
• The MBOX itself is corrupted
• Past or present virus infection has affected your MBOX
• Drivers associated with MBOX software need to be updated
• Your computer does not have the adequate system resources to open the E-mail Mailbox format