Note: If you have a large number of messages, this operation could take a long time. Go to the local directory where the EML files are stored and drag & drop them into Outlook.Create a folder in MS Outlook to contain the email messages, then select it to make it the active folder.Importing EML files into Outlook is pretty easy: All messages will be saved in the EML format, which Outlook can recognize. In Thunderbird, use “Ctrl+A” to select all messages in the mbox folder, right click the selected messages, click “Save as…”, then select a directory to save the selected messages. Restart thunderbird, and you should see that all messages in the mbox file are now in your Local Folders list.

Change the folder to the directory where the mbox file resides.

Right click Local Folders, select Settings, click the Browse… button beside the Message Storage > Local directory text field.

, then click Next.Īfter the account has been set up, you will see there is a Local Folders structure on the left panel in Thunderbird.

Enter a fake name and Email address in the dialog that pops up, then click Next. The MBOX file extension was developed for an E-mail Mailbox File that is used in organizing messages sent and received as emails.

Click the Newsgroups link in the Thunderbird > Accounts section.

You can simply click Cancel to close the dialog.

On the first launch, Thunderbird will ask you to set up an Email account.

You can create a fake account just for the conversion process: You will need to create a Thunderbird account so that the mbox file can be imported, although this doesn’t need to be a real email account. Note: The following operations are based on Thunderbird version 68.

Install Thunderbird on your Windows Computerĭownload Thunderbird from, then install it on your computer. One way around this is to use another mail client, like Thunderbird, to convert Mbox files to a format compatible with Microsoft Outlook. The Mbox format can be opened by Apple Mail and other mail clients, but unfortunately, Microsoft Outlook cannot open Mbox files directly on Windows. In CubeBackup, Gmail messages are exported as Mbox files (similar to Google Takeout exports). How to open an Mbox file in Microsoft Outlook.