How to Convert Office 365 Emails to MBOX?

Converting Office 365 emails to MBOX format is a common requirement when users want to access their emails in MBOX-supported email clients such as Thunderbird, Apple Mail, or for long-term archival purposes. Since Office 365 does not offer a direct option to export mailboxes to MBOX, users must rely on manual methods or professional tools. In this blog, we will explain the reasons for conversion, the manual approach, and the best automated solution.

Instant Solution: The Advik Office 365 Backup Tool provides an instant and reliable solution to export Office 365 to MBOX format. It allows users to export entire mailboxes or selected folders directly without using Outlook or Thunderbird. The tool ensures fast processing and complete data accuracy.

Reasons to Convert Office 365 Emails to MBOX

There are several reasons why users choose to convert Office 365 emails to MBOX format:

1. To migrate Office 365 data to MBOX-supported email clients

2. To create an offline backup of Office 365 mailboxes

3. For email archiving and compliance needs

4. To avoid dependency on cloud-based services

5. To manage and store emails locally

Method 1. How to Export Office 365 Emails to MBOX Using Thunderbird?

The manual approach requires Thunderbird and multiple configuration steps.

Steps:

1. Download and install Mozilla Thunderbird on your system.

2. Add your Office 365 email account to Thunderbird using IMAP settings.

3. Allow Thunderbird to fully synchronize all mailbox folders.

4. Install the ImportExportTools NG add-on in Thunderbird.

5. Right-click on the mailbox or folder you want to convert.

6. Select ImportExportTools NG > Export folder.

7. Choose MBOX format and select a destination location.

Limitations:
This method is slow, requires continuous internet connectivity, and is not suitable for large or multiple mailboxes.

Method 2: How to Convert Office 365 Mailbox to MBOX?

Using the Advik Office 365 Backup Tool, users can convert Office 365 emails to MBOX automatically without manual configurations. The tool connects directly to Office 365 and exports mailboxes while preserving folder hierarchy, email properties, attachments, and metadata. It also supports bulk mailbox conversion with advanced filtering options.

Steps to Convert Office 365 Emails to MBOX with Advik Tool

1. Download and install the Advik Office 365 Backup Tool.

2. Launch the software and log in using Office 365 credentials.

3. Select the mailbox or mailboxes you want to convert.

4. Choose MBOX as the output format.

5. Apply date range or folder filters if required.

6. Select a destination path and start the conversion process.

Key Features of Advik Office 365 Backup Tool

1. Convert Office 365 emails to MBOX and other file formats

2. Support for single and bulk mailbox export

3. Preserve original folder structure and email integrity

4. No Outlook or Thunderbird required

5. Advanced date and folder filtering options

6. Simple, secure, and user-friendly interface

Conclusion

Although the manual Thunderbird method can convert Office 365 emails to MBOX, it is time-consuming and unsuitable for large data. For a fast, secure, and accurate solution, the Advik Office 365 Backup Tool is the best choice. It simplifies the conversion process and ensures complete data integrity, making it ideal for both individual users and enterprises.