Quickly Import OST to Zoho Mail: Best Guide

Written By Md Shoaib
Updated on November 11th, 2025

Robert’s Query: “I have multiple OST files exported from my Outlook account. Now, I want to access all those emails in my Zoho Mail account. Is there any simple method to import OST to Zoho Mail without losing attachments?”

Introduction: If you’ve recently moved from Outlook to Zoho Mail, you may find OST files stored locally. However, OST (Offline Storage Table) files contain your entire mailbox data. On the other hand, Zoho Mail doesn’t support the OST file directly. So, how can you import OST to Zoho Mail without Outlook? Therefore, in this blog, we’ll explain both the manual and CloudMigration OST to PST Converter.

Quick Solutions:

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Real-Life Example
Luci, an HR professional, had several OST backups after her company switched from Outlook to Zoho Mail. Manually uploading them wasn’t possible due to compatibility issues. Therefore, she used the CloudMigration OST Converter Tool. And within minutes, all her Outlook OST emails and attachments appeared perfectly in her Zoho Mail account.

Table of Contents

Why Migrate from OST to Zoho Mail

There are several reasons why users choose to move OST emails to Zoho Mail:

Firstly, to access Outlook offline emails in a new Zoho Mail account.
Zoho offers better integration, collaboration tools, and web access.
Also, it prevents data loss due to OST file corruption or Outlook crashes.
Therefore, it consolidates all email communication into one cloud-based account.

Important Note: If you want to learn more, you can also explore how to open an OST file in Outlook.

How to Import OST to Zoho Mail Manually?

There’s no direct manual method to move OST files to Zoho Mail. However, you can use Outlook as an intermediate tool. Therefore, keep in mind that the manual process has some drawbacks.

Follow the steps below to transfer OST file to Zoho Mail :

Firstly, Open Outlook → Go to File → Open & Export → Import/Export.
Now, choose Export to a File → Outlook Data File (.pst).
After that, select the folders you want to export → Finish to create a PST file.
Besides that, Open Zoho Mail → Go to Settings → Mail Accounts → Add Mail Account.
Further, merge your Outlook account via IMAP with Zoho Mail credentials.
Lastly, move all emails from the PST-imported account to Zoho Mail folders.

Pitfalls to Import OST to Zoho Mail Manually

First of all, it requires an Outlook installation on your device.
Also, this method is a complex IMAP setup process.
Therefore, it is very time-consuming for large OST files.
There is a possibility of data loss during conversion or syncing.

Migrate emails from Outlook OST to Zoho Mail Securely

For a safe and hassle-free migration, use the CloudMigration OST to PST Converter Tool. It directly converts OST files into Zoho Mail without depending on MS Outlook. Therefore, the software supports bulk import, preview, and advanced filters for precise migration. Also, this highly efficient tool allows users to convert OST file to HTML and other file formats.

One-Time OST to Zoho Mail Migration Service

For non-technical users or organizations, CloudMigration also offers a One-Time Migration Service. This service handles the entire process, ensuring:

100% data accuracy | Zero downtime during migration | End-to-end encryption and privacy assurance

Ideal for businesses that prefer a fully managed, hands-free migration solution.

Step-by-Step Process Recap to Import OST to Zoho Mail:

Firstly, download and install the CloudMigration OST to PST Converter Tool.

Now, select Files/Folders → Add the OST file that you want to migrate → Next.

After that, expand the tree structure → Preview the content → Next.

Subsequently, choose Zoho Mail as the saving format.

Further, sign in using the Zoho Mail Account credentials.

Finally, apply the additional filters → Convert to begin with the process.

Advantages of the Tool to Migrate from OST to Zoho Mail

First of all, the tool directly converts OST files to Zoho Mail.
Also, it maintains email formatting, attachments, and folder structure intact.
Therefore, this software works without Outlook or Exchange Server.
Besides, it offers advanced date, subject, and folder filters.
Supports conversion to multiple formats, like convert OST to PDF.
Moreover, it is compatible with both Windows and macOS platforms.

Conclusion

To sum up, migrating OST to Zoho Mail is made simple and secure with the OST Converter Tool. While the manual method exists, it’s lengthy and requires Outlook setup. Therefore, the automated solution to import OST to Zoho Mail ensures an error-free migration. Whether you’re moving a few files or thousands, this tool guarantees seamless conversion with zero data loss.

Frequently Asked Questions

Q1. Can I directly import an OST file into Zoho Mail?

Ans. No, Zoho Mail does not support direct OST file import. However, you can easily import OST files using the CloudMigration OST Converter Tool. This allows you to transfer an OST file to Zoho Mail without Outlook or Exchange Server.

Q2. How long does the OST to Zoho migration take?

Ans. The migration time depends on the size of your OST file and your internet speed. With the CloudMigration OST Converter Tool, the process is optimized for fast, accurate transfer, even for large files.

Q3. Can I import multiple OST files into Zoho Mail at once?

Ans. Yes. The CloudMigration OST Converter Tool supports batch migration, allowing you to add and import multiple OST files simultaneously without losing email integrity or folder structure.

Q4. What is the best way to import an OST file to Zoho Mail?

Ans. The most reliable and efficient way is to use the CloudMigration OST Converter Tool. Therefore, it directly migrate emails from Outlook OST to Zoho Mail with complete data preservation, no Outlook dependency, and zero data loss.

About The Author:

Md Shoaib

Hi, I’m Md Shoaib! I enjoy writing about technologies and helping my readers with their queries, and I’m always looking for new ways to challenge myself and grow. Professionally, I work as a Digital Marketer, where I specialize in SEO and Copywriting.