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Written By Rohit Singh
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Updated on October 25th, 2025
In a corporate environment, professionals experience challenges related to email compatibility. A colleague sharing an MBOX file with a client working on Outlook will create a technical barrier. The best approach is to import MBOX to Outlook to make the shared email file fully readable and accessible. But, how will the user import the MBOX file into the Outlook account? Read this blog to understand how one can do this conversion manually and directly. The direct solution includes a dedicated Cigati MBOX Converter. Before heading to the solutions, let us first understand why users choose to import MBOX data to their Outlook account.
There are a variety of practical reasons why users consider importing MBOX files into Outlook. A few of them are listed below:
Now, we will begin executing the solutions to import the .mbox files into the Outlook account. There are both manual and automated solutions. Choose the method that is best suited according to your requirements.
Also Read: Import MBOX to iCloud Webmail
In this method, we’ll import MBOX to Outlook.com in two steps. We will first import the MBOX file into the Thunderbird email client. Then, sync the data with MS Outlook. If done correctly, it maintains the folder structure.
Follow the step-by-step process to start the conversion:
Step 01: Import MBOX into Thunderbird
Step 02: Open MBOX File in Outlook
Incoming Mail Server (IMAP) | Server: imap.gmail.com |
| Port: 993 | |
| Encryption: SSL | |
Outgoing Mail Server (SMTP) | Server: smtp.gmail.com |
| Port: 465 or 587 | |
| Encryption: SSL |
Limitations: The entire IMAP synchronization process becomes slow when handling large mailboxes. The email attachments may not synchronize properly in a few cases. The time required for syncing the emails depends on the internet connection speed.
This method uses both Thunderbird and Outlook mail clients to upload MBOX to Outlook. First, convert the MBOX format to the EML file format and then import it to the Outlook account.
These are the steps to follow to begin the process:
Limitations: Importing large files can become a tedious and time-consuming task. Sometimes the attachments and formatting may be lost.
With the Cigati MBOX to PST Converter, users can safely import large volumes of MBOX files to the Outlook account. In addition to importing into Outlook, the tool supports migration to other cloud platforms. Besides this, it can bulk convert MBOX files to other file types as well. Before the conversion, users can preview emails and attachments.
The MBOX to Outlook import process plays an essential part while switching from macOS to a Windows environment. One could try the native method, but it is technically complicated. Therefore, choose a professional tool like Cigati MBOX Converter to bulk import MBOX to Outlook account. It imports the MBOX data securely without any data loss.
You May Also Read: Import MBOX to Office 365
Ans: Yes. You can import the MBOX files to Outlook 365 on Windows, but not directly. In Windows, you need to first convert MBOX to PST and then import the PST file into Outlook. And for Mac users, convert the MBOX file to EML format and then access it in Outlook.
Ans: One of the critical risks of manually importing the MBOX to Outlook is the loss of data. During the process, if the connection fails or a step is missed, it can lead to loss of essential email data. Hence, we recommend users to use a dedicated tool to import the .mbox files into Outlook.
About The Author:
Rohit Singh is an Email Backup, Recovery & Migration Consultant and is associated with Software Company from the last 3 years. He writes technical updates and their features related to MS Outlook, Exchange Server, Office 365, and many other Email Clients & Servers.
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