How to Upload MBOX Files to Zoho Mail Account?

  Kumar Raj
Written By Kumar Raj
Anuraag Singh
Approved By Anuraag Singh
Modified On August 1st, 2025
Reading Time 6 Minutes Reading

There are some users who need to move their MBOX file to Zoho Mail, like webmail. If you are one of them and want to import MBOX to Zoho Mail. I have a solution that you can use. Apart from that, I am also going to talk about backing up your Zoho Mail data, so read the article to the end.

Mailbox or MBOX file is a common file format that you can access from multiple platforms. Most users use it for storing their emails on a local device or importing them to other email clients like Thunderbird, Eudora, etc.

Zoho Mail, on the other hand, is an email service provided by Zoho CRM. It is a professional email program that offers robust features like custom domains, calendar integration, and collaboration tools. Unfortunately, Zoho doesn’t support MBOX files, so if you are thinking of importing the files, then you have to use workarounds.

Why Want to Download MBOX Files in Zoho Mail?

Although Zoho doesn’t allow MBOX files to open, there are still many users who want to move their files to Zoho for several reasons.

  • You have an old MBOX file that you want to open. But you only have Zoho Mail.
  • Opening a MBOX file in Zoho allows you to access the other tools of Zoho.
  • You want your personal MBOX file in the professional Zoho email account.
  • Zoho Mail can be accessed on multiple devices. This way, you can also access your MBOX file on various platforms.
  • Having the file in Zoho helps you to preserve the data from any accidental loss or corruption.

Therefore, there are many reasons for uploading the MBOX file to Zoho. And I also have a way to do it. Read the next section to import MBOX to Zoho.

Upload MBOX Files to Zoho Mail Account with Thunderbird

Unfortunately, Zoho doesn’t support MBOX, so I am going to use Thunderbird to import the MBOX file. To use this, first install Import/Export Tools NG and also enable the IMAP server in Zoho Mail.

  1. First, I am going to configure the account. So, open the Thunderbird application.
  2. Go to the Account Section. Click on the Account Action and select Add Mail Account.
  3. Enter the required account details of Zoho. Then continue button.
  4. Thunderbird will automatically fetch your IMAP settings. Just click on the Continue button.
  5. Now, the Zoho Mail account is connected to Thunderbird. Within the program, create a folder under the Zoho account.
  6. Right-click that folder and click on the Import/Export Tools NG option.
  7. Select Import mbox file, then import all the individual files.
  8. Browse your files and open them in the folder.
  9. Lastly, drag and drop an email from the folder to the Zoho account inbox.

With this method, you can easily import the MBOX file to Zoho Mail. But as you know, some professional users have too much data already stored in their Zoho mailboxes. So, if your mailbox is too full, then it will be difficult for you to import your data. In that case, try this professional tool to clean  Zoho Mail email storage space.

How to Clear Storage Space in Zoho?

Although you can remove unnecessary emails to reduce the space. But, still, there are plenty of very important emails. So, back up them. For this, I have found a great utility, SysTools Zoho Mail Backup Tool, to store your Zoho emails. It is a professional tool that means it is created to download multiple Zoho emails and import your Zoho mail to MBOX, PST, PDF, etc. To know how this utility works, follow the steps below.

Download Now Purchase Now

Steps to Take Zoho Mail Backup

  1. First, download and install the tool on your computer or laptop.
    download tool
  2. Provide your account details: username and password. Then, click on the Login button.
    provide zoho account details
  3. After that, you will see different file options to save your data. Choose any one.
    choose an option
  4. Browse a location and click on the Start button.
    click start button

This way, you can not only reduce storage space to easily import MBOX files, but it also benefits you. Such as.

Other Benefits When Saving Zoho Mail

  • Importing a large MBOX file into Zoho Mail also makes your mailbox full. So, by using this tool, you can make room for new data.
  • Configuring Zoho Mail with Thunderbird is a bit tricky; one wrong move and you can lose your data. Hence, first create a copy of your emails and then connect your account.
  • To avoid any future issues like accidental deletion, data corruption. It is better to take a backup of the file beforehand.
  • Later, if you want your data offline, you can use this tool.

Therefore, a backup option is also needed when you are uploading your MBOX file to Zoho Mail.

Frequently Asked Questions

Q. Does Zoho Mail support MBOX files?
Ans. Now, Zoho does not support MBOX files. If you have an MBOX file that you want to open in the program, use the MBOX-supported email client to connect your account.

Q. What are the IMAP settings of Zoho Mail?
Ans. Below are the server settings of Zoho Mail

  • Incoming Server: imap.zoho.com
  • Port: 993
  • Encryption: SSL
  • Outgoing Server: smtp.zoho.com
  • Port: 465 (SSL) or 587 (TLS)
  • Encryption: SSL or TLS

Q. Is it compulsory to backup my Zoho email before importing MBOX?
Ans. It is not compulsory, but it is recommended to backup your current mailbox if it is full, or avoid any data loss.

Concluding Words

It is a little difficult to move your MBOX file to a Zoho Mail account. Therefore, in this article, I have explained a way to import MBOX to Zoho Mail. The option is free to use, but you might face a challenge of a full Zoho Mail mailbox. To reduce the storage, backup your Zoho data. So, saving the Zoho emails is a first step before you move your MBOX file.

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  Kumar Raj

By Kumar Raj

He is an ardent tech enthusiast and has a specialization in simplifying complex tech topics. With a knack for staying ahead of the curve, he provides readers with up-to-date insights into the ever-evolving tech world. When he is not writing, he enjoys exploring new gadgets and is actively engaged in tech communities.