Monday 3rd March 2025

Summary: The MBOX file is a mailbox file created by Thunderbird, Apple Mail, SeaMonkey, Eudora, etc. The MBOX file kept multiple emails with attachments in a single file. Roundcube webmail is a webmail that is used to access or open emails online. In today’s world, many users are still searching for the best method to convert MBOX files to Roundcube Webmail but they aren’t getting the right method to convert MBOX files to a webmail account. In this updated guide, users can learn the simple techniques to convert MBOX files to Webmail.

User Query:-

Hello, I’m Genevieve Ward from the United States, Alaska, and my query is how can I move my 20 GB MBOX file to Roundcube Mail. Recently I have been shifting my company to another one and I need to access my old Thunderbird MBOX files to a webmail account but don’t know how to move all my 20GB MBOX files. Please, someone, suggest to me the simplest and easiest method to import MBOX emails with attachments to webmail.

Reasons to Convert MBOX Files to Roundcube

There are multiple reasons to export MBOX file to Webmail:-

  • Roundcube is a webmail email client that can be accessed anytime, anywhere, without needing other third-party email clients.
  • Easy Graphical User Interface that makes email migration better for users.
  • Roundcube webmail has multiple features such as drag and drop, advanced search, folder organization, etc.
  • Roundcube supports the IMAP email server for seamless integration of different mail services. Unlike MBOX files, they can be opened or accessed with supported email clients like Thunderbird, Apple Mail, etc.
  • Roundcube allows users to manage different account emails in a single dashboard, which is impossible with an MBOX file.
  • MBOX files can be opened with a third-party email client. On the other hand, Roundcube is server-based and can be accessed by any web browser.

After knowing the reasons for conversion from MBOX to Roundcube Webmail. Users need to know the best method to convert MBOX files to Roundcube Webmail.

Free Method: Import MBOX File into Roundcube Webmail Manually

Note: While using a free method User needs to install multiple email clients such as Thunderbird. While using the method, you need to follow each step to convert MBOX files.

convert-mbox-to-webmail-online

Step 1: Install Mozilla Thunderbird or extract MBOX files

  • Start by downloading and launching the Thunderbird software on your computer.
  • After that, choose Add-ons and Theme by pressing the menu button.
  • Install the ImportExport NG add-ons after investigating them.
  • Next, restart the Mozilla Thunderbird program.
  • Choose the Export All folder after that.
  • Select the MBOX file format for the files now.
  • Select the location, where you want to save the files on your computer.

Step 2: Open Roundcube WebMail or Import MBOX files

  • Log in to the Roundcube webmail interface after finishing Step 1 and then to the cPanel account.
  • Next, select the Import option by clicking on the Menu.
  • Click the Browse tab to choose the files.
  • Next, click the Ok button after choosing the MBOX file format.

Limitations in Manual (Free) Techniques:

Users can convert MBOX to webmail Roundcube but they have multiple limitations while using the manual methods: –

  • The manual method takes a lot of time to convert large sizes of MBOX files to Roundcube webmail.
  • While using the manual method, the user can lose their important MBOX files if they miss any single step.
  • Need to install multiple email clients on PC to convert MBOX file to Webmail.
  • A non-technical user cannot operate the free method easily because they need technical knowledge to operate the free method.

Professional Method: Import/Open/Access MBOX Files in Webmail

In the technology era, many users are still trying to find the best solution to import MBOX Files to Roundcube webmail accounts but they haven’t found any good solutions yet. Users can use the BLR MBOX converter software to convert MBOX files into a webmail account without losing a single email while doing the conversion process. This advanced software can be worked with on all Windows OS editions, such as Windows 11, Windows 10, Windows 8.1, Windows 7, Windows XP, Windows Vista, etc. This tool has multiple features that make the conversion process easier for technical or non-technical users. While using this software, the user didn’t need any other email client to import/convert MBOX files to a Roundcube Webmail account.

This software also converts MBOX files into PST, PDF, EML, EMLx, HTML, MHTML, Office 365 Gmail, TXT, PNG, JPG, Zoho Mail, Hotmail, etc. Users can also use the free demo edition of this software to learn more features and functions about the software without needing to pay for this tool.

Steps to Import MBOX Files into Roundcube Webmail

  • First, download the BLR MBOX email converter tool.
  • Launch the application and accept the terms and conditions.
  • After starting the software select the MBOX files from the select option pane.

select-mbox-files-or-folders

  • Users can preview the selected MBOX files with the preview feature.

preview-selected-mbox-files

  • Click the next button and select the webmail option from the file list.

select-imap-option-to-move-mbox-files-in-roundcube-webmail

  • Enter the credentials such as email ID and password.

enter-credentials-and-click-convert-to-begin-conversion-process

  • Verify, After that click the convert button to begin the conversion process.

Keep Attention: If users use a free demo edition of the software they can only convert 15 MBOX files to webmail to convert unlimited MBOX files to webmail users need to purchase the full edition of BLR Tools MBOX data converter software or mbox email exporter.

Noteworthy Features in Professional/Third-Party Software Solutions:

  • This software can work with all Windows editions whether it’s the latest edition or oldest one.
  • Users can convert MBOX files to multiple email clients for email formats without installing multiple software on a PC.
  • This Utility can convert large MBOX folders to a webmail account without any data size limitations.
  • A Preview feature is available in the software that is helpful to take a view of selected MBOX files.
  • This application can convert MBOX files with attachments to a webmail account.
  • Take less time to convert MBOX files or folders to Roundcube webmail.
  • Users can also import Thunderbird emails to Outlook by using this software.

Final Statement,

Several characteristics, particularly time, technical expertise, and the volume of MBOX emails influence the decision between the two approaches. Using a professional solution is the best method to ensure an effortless conversion from MBOX files to Roundcube Webmail if a manual technique looks complicated.

The manual method involves importing MBOX files into Thunderbird and then synchronizing them with an IMAP server. Manual techniques can easily done by tech-savvy users. An effective or automate solution is offer by BLR company. This MBOX mailbox converter software solution allows customers to switch/export/convert from MBOX email to Roundcube webmail with ease and without losing any data. This tool is perfect for large-size MBOX file migrations.

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