How to Import MBOX to iCloud Webmail? Best Ways

Published By Jamie Kaler

Approved By Rollins Duke

Published On November 20th, 2025

Reading Time 8 Min Read

Overview: In this write-up, we will explain all the possible best manual and alternative solutions to import MBOX to iCloud account. In this, we will include reasons, tested manual methods, and a professional tool to import data without losing any important emails. However, this will help you to find the perfect solution according to your needs.

Introduction to MBOX and iCloud

MBOX is one of the popular email file formats. That’s why many people know that the .mbox file extension stands for Local Mailbox Storage. It is such a popular file format that even Google is using it now.

Unlike MBOX, iCloud is a webmail and cloud storage account by Apple Inc. for all iOS, macOS users. iCloud also provides Email features where you can send, receive, and organize your emails.

And multiple situations arise when users need to import MBOX to iCloud webmail. But it is not as simple as you think. So, we have mentioned each step and details for the easy and hassle-free process to import MBOX files to iCloud Mail.

What Are the Major Reasons to Upload MBOX to iCloud Account?

Switching to iCloud: Sometimes users save their emails in MBOX file format and want to transfer the data to their Mac devices.
Cloud-Based storage: MBOX files are stored locally and cannot be accessed from any other device. For Cloud access, users import MBOX files to iCloud.
Data Loss: To avoid the risk of data loss, users switch their data to iCloud so that they can access it even when the system fails.
Safety and security: In case your MBOX files get corrupted or your system gets affected by a virus. Hence, saving files to iCloud helps users protect them online.

How to Import MBOX to iCloud Webmail Manually?

We will explore two methods to import MBOX to iCloud. In this, we will include a method using the Thunderbird email client and another for Mac users.

Method 1: Using Thunderbird to Import MBOX to iCloud

We will use Thunderbird email client to do this process, because it supports MBOX format to store data and allows users to connect to server-based email service like iCloud. This method is divided into multiple steps to import MBOX to iCloud webmail, so follow every step:

#1: Import MBOX File to Thunderbird

Download, install, and set up Thunderbird properly.
And then, install the “ImportExportTools NG” add-on on your Thunderbird.
And restart your email client again.
Right-click on any folder or choose the “Tools” icon.
Select “ImportExportToolNG” >> “Import MBOX File” option.
After that, a pop-up comes and choose the “Import Directly One or More MBOX Files” option.
Locate the path of the MBOX file, select it, and choose the “Open” button.

#2: Connect iCloud to Thunderbird Account

Restart your application.
Head to the “Tool” tab and choose the “Account Settings” tab.
Locate the “Account Actions” and choose the “Add Mail Account” option.
Provide the login details like full name, email address, and password of the iCloud account.
Hit on the “Continue” icon and select “IMAP” as configuration and select the “Done” icon.
At last, click on the “Finish” button to import MBOX to iCloud webmail.

#3: Import MBOX to iCloud by Moving Option

After uploading the MBOX file and connecting the iCloud account to the Thunderbird account. Now we will move the uploaded emails to the iCloud account.

Restart the Thunderbird application.
Right-click on the uploaded MBOX.
Choose the “Move To” option.
Select the connected iCloud account’s folders.
And finally, your email will move to an iCloud account.

Method 2: Import MBOX to iCloud Using Apple Mail (For Mac Users)

Firstly, open Apple Mail on your Mac system.
Then, connect your iCloud account if you have not connected.
After that, navigate to the “File” option >> Import Mailboxes and select MBOX files.
Now, click continue and choose your MBOX file data.
Tap on the Choose to import MBOX files to Apple Mail.
Lastly, select MBOX files, drag and drop them into the iCloud folder.

Note: This method can only be used by Mac users. Moreover, large file users may be required to upgrade iCloud for more storage, and sometimes it is complex and increases the risk of error.

Limitations of Using Manual Methods

Importing data using the manual method takes time and may be difficult for users who have multiple MBOX files.
Users require some technical knowledge to perform the manual method, and not suitable for non-tech users.
It may have the risk of incomplete import, such as missing attachments, email attributes, folders, and more.
In case your MBOX file is corrupted the Apple Mail will not import and may create an error in the process.

Professional Solution – MBOX to iCloud Migration

As we know, there is no way to import MBOX to iCloud webmail. That’s why we suggest you download MBOX Converter for Mac and Windows. This application allows you to directly import MBOX to iCloud accounts. You can also install this application on your Windows and Mac devices – iOS, iPad, Mac-Laptop (MacBook), etc.

Download this Tool from the Given Buttons:

Download Now Purchase Now

Note: Our tools are available for free trial purposes. You can install it on your Windows and Mac computers to know the process before purchasing it. The free edition allows you to export only 25 MBOX emails to iCloud accounts.

How to Import MBOX to iCloud Webmail in Bulk? All Steps

Download and install the software on your system, and then read all the instructions and hit the “Next” button.
Select MBOX files with “Dual Selection Options”. If you have multiple MBOX files, then choose the “Select Folder” option.
After this, you need to select the required MBOX file/folder from the list.
Now, choose the “IMAP” option in the list of file-saving options.
Also, you can choose the “Advanced Filter” option for the selective migration process.
Enter your iCloud account credentials with iCloud IMAP settings.
After this, click on “Next” to import MBOX to iCloud accounts.

Also, split a large MBOX file by following this blog.

Expert Support: If you are not able to import MBOX to iCloud on your own. Then, our support team will perform the safe and certified import process remotely on your behalf while maintaining data security.

MBOX to iCloud Migration – Features & Its Benefits

100% Secure Safe Tool: The program is completely secure from any threat or virus attack. It is tested by many professional labs and organizations. Also, you can enter your account credentials without any security issues. The software will never store your data inside the software, and its interface caches.
Keep Email Properties Preserved: The software keeps all your MBOX email properties during the MBOX to iCloud import process. One can easily use this application to upload multiple MBOX file emails to an iCloud account. During the process, the software maintains all your email data with elements such as email with attachments, email addresses, email subjects, internet headers, images, etc.
Selective Email Import MBOX to iCloud: One of the required options is selective email migration. But by using this application, you can migrate *.mbox files to iCloud accounts selectively. The software gives many filter options which are helpful for all types of users. You can migrate data by date range, by to, from email address, by subject, and many more.
Options for Bulk Migration: The software not only import MBOX to iCloud webmail. But using this application, one can easily import multiple MBOX files to an iCloud account at once. The software provides dual selection options to choose multiple MBOX files at once. The add folders option allows you to load multiple MBOX files in a folder (including subfolders) into the software interface.
Import MBOX to iCloud Directly: There is no need to follow extra steps; this software can upload data directly with complete email data. The simple interface makes the process smooth and flawless.

Frequently Asked Questions

Ques 1: Can I install this application on my Windows Server 2016 machine?
Ans: Yes, the software supports all Windows Server operating systems. But you can operate this application like a client-based application.

Ques 2: Does the software keep the email folder hierarchy structure during the process?
Ans: Yes, the software preserves the MBOX email folder hierarchy structure during the process.

Ques 3: Can I import four MBOX files to iCloud accounts in a single process using this application?
Ans: Yes, the software supports dual selection options to choose multiple MBOX files at once.

Ques 4: Can I use this application to upload Thunderbird MBOX files to iCloud accounts?
Ans: Yes, the software allows you to import Thunderbird MBOX files to iCloud accounts without any issues.

Conclusion

The above article described the solution to import MBOX to iCloud webmail. If you are one of those who want to move emails in *.mbox files, then download the program mentioned here. You can install this application on your Windows and Mac Computers. MBOX to iCloud Migration tool comes with trial versions. You can test this application before purchasing it. For more information, contact the support team.

Support Service: In case you need any further information about the software process, features, filter, or any other you can directly contact our support team through email at [email protected] or by opting for the live chat option. However, our team professionals will contact you shortly.