Complete Steps to Import MBOX to iCloud Mail

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Updated on
June 11, 2025

5 minutes Read

Summary: User query: “I want to switch from Windows to macOS, but I’m finding it difficult to transfer all my emails. I’ve already backed up my Thunderbird emails into an MBOX file for an easier transfer. However, I’m unsure how to securely import MBOX to iCloud. Could you suggest a solution?”

This blog is helpful in providing different solutions, such as the native and automated MBOX Converter Tool, to finish this process successfully. Now, we will start with the reasons and move to the solutions to complete this task effortlessly.

Import MBOX Files to iCloud: Reasons

Although MBOX is a widely accepted file format, users still wish to save it in iCloud due to the following reasons.

  • Users import their MBOX files to iCloud to keep all their emails in a single location.
  • This process works as a backup to keep all the emails secure from unexpected loss and threats.
  • By this process, users can easily access MBOX file content on all Apple devices.

Trustworthy Methods to Import MBOX to iCloud

Now, you must be aware of the reasons they choose to import their MBOX files into iCloud. Furthermore, we will be discussing different approaches to do this process. Out of them, pick the best as manual methods might lead to heavy data loss. Besides, you might not be able to retrieve them.

#1. Free Techniques to Import MBOX into iCloud

Here are the different traditional ways to do this process, along with complete steps.

Approach 1. With Mac Mail (Apple Mail)

  1. To start, launch and sign in to your Mac Mail if not signed in.
  2. Later, tap File and choose the Import Mailboxes.
  3. Further, pick Files in MBOX format and then the MBOX file from the PC.
  4. Now, your MBOX file will be imported from the local drive.
  5. After that, choose the folder in which you want to import the MBOX file.
  6. Next, a pop-up will show that the process is done successfully. Hit Finish.
  7. Later, visit and right-click on the Cloud account and create a new folder.
  8. Afterwards, pick the MBOX file -> Move To.
  9. Then, save the imported MBOX file in iCloud.
  10. In the end, visit System Preferences and choose iCloud. Also. Make sure iCloud is synced with Apple Mail.

Approach 2. Using the Mozilla Thunderbird Application

Part 1. Configure iCloud in Thunderbird

  1. First, visit the Menu in Thunderbird and select New Account.
  2. After that, visit the Existing Email Address from the Next Account.
  3. Now, provide the iCloud credentials to connect iCloud in Mozilla Thunderbird.

Part 2: Add ImportExport NG Add-On

  1. Here, navigate to Settings and tap add-ons and themes.
  2. Now, search and tap Add near ImportExportTools NG.
  3. Further, run your Thunderbird account again.
  4. Next, create and right-click on the folder in Thunderbird and choose ImportExportTools NG.
  5. After that, import the MBOX file from your system.

Part 3. Import MBOX File to iCloud Mail

  1. Now. Choose the email or folder to import.
  2. Lastly, drag and drop them into an iCloud account.

In case the above method is not suitable for your requirement, try another approach.

#2 Automated Solution to Upload MBOX File to iCloud

EmailDiver MBOX File Converter Tool is an advanced software that completes the process in minimal time. This wizard allows users to import MBOX to iCloud in bulk simultaneously. Furthermore, it provides incredible features such as an identical email remover, selective time period email migration, and so on. Despite the use of these features, the importing process will be done with minimal downtime with no effort. Moreover, it keeps the data intact throughout the process.

Stepwise Procedure to Import MBOX Files to iCloud

When you follow the steps correctly, the process will end in minimal downtime.

  1. For this process, install theMBOX Converter Wizard on your system.
  2. Later, visit Select Files and add the MBOX files and hit Open.
  3. Further, preview and select the item for MBOX to iCloud importing. Click Next.
  4. Afterwards, choose the iCloud option from the given list of email clients.
  5. Then, enter the credentials to log in and then tap Sign In.
  6. At the end, hit Convert, and the process will start to import your MBOX to iCloud.

Also Read : Import MBOX to Google Workspace

Conclusion

Now, we will conclude the entire blog. With the help of this post, you might import MBOX to iCloud easily and smoothly. Besides, we provided multiple methods to do this process effectively. However, users with high technical skills can perform the manual procedure. If not, it is recommended to choose a professional approach for this process. Using automation techniques, the process will finish instantly with no data loss.

Frequently Asked Questions

Q1. How do I upload my MBOX to iCloud?

Ans. To import MBOX to iCloud, you must go through the steps below. 
1. Install the Thunderbird application and add the iCloud account. 
2. Add the Import/ExportNG Tools add-on and import the MBOX file into Thunderbird. 
3. Transfer the imported MBOX file into the iCloud folder using the drag-and-drop technique.

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