How to Migrate BigRock Email to Office 365? Complete Solution

Written By Md Shoaib
Updated on August 23rd, 2025

Daniel Martinez Query: I’ve been using BigRock email for my small business for the past few years. But now, I’ve subscribed to Microsoft 365 and want to shift all my old emails to Office 365. So my team can work better using Outlook and Teams. Can someone tell me how to migrate BigRock Email to Office 365 without losing anything?

Introduction: Many small business owners want to transfer emails from BigRock Email to Office 365. Because Microsoft 365 offers better tools, such as Outlook, Teams, and secure cloud storage, all in one place. However, the biggest concern during this migration is losing important emails or disrupting daily communication. In this blog, we will explain two methods: a manual IMAP migration and a professional CloudMigration IMAP Backup Tool. Additionally, each method provides a quick, reliable, and 100% accurate migration with zero data loss.

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Table of Contents

Why Migrate Emails from BigRock to Office 365?

Here are a few reasons people choose Microsoft 365 over traditional email services like BigRock:

Office 365 gives more storage space for emails and files.
Microsoft offers advanced threat security protection.
Easy access to your emails from any device, anytime.
It includes Teams, OneDrive, Word, Excel, and more.
Also, you don’t need to manage servers or software.

Manual Method to Migrate BigRock Email to Office 365

If you want a manual method, Microsoft offers a manual IMAP migration method that works well for email-only transfers. Follow the steps below to migrate BigRock to Office 365manually:

Step 1: Prepare Your Office 365 Environment

Before you perform the manual method, firstly, make sure:

You have a valid Microsoft 365 subscription.
All user mailboxes are created in the Microsoft 365 admin center.
You have admin access to both BigRock and Microsoft 365.

Go to admin.microsoft.com and set up user accounts if you haven’t done it already.

Step 2: Gather BigRock IMAP Details

You’ll need these settings to connect BigRock to Office 365:

IMAP server: mail.yourdomain.com
Port: 993
Encryption: SSL/TLS
Username: Full BigRock email address
Password: That user’s BigRock email password

Step 3: Create a CSV File for Migration

Make a simple CSV file with the following three columns:

EmailAddress, UserName, Password user1@yourdomain.com,user1@yourdomain.com, UserPassword1 user2@yourdomain.com,user2@yourdomain.com,UserPassword2

Save it as migration.csv on your desktop.

Step 4: Migrate BigRock Email to Office 365

Go to the Exchange Admin Center (EAC) at: https://admin.exchange.microsoft.com.
Then, click Migration > Add migration batch.
After that, choose IMAP as the migration type.
Upload the migration.csv file you created.
Further, enter BigRock’s IMAP settings when prompted.
Name your migration batch (e.g., BigRock-Move) and start it.

Limitations of the Manual BigRock to Office 365 Migration

Only emails are migrated; contacts, calendars, and tasks are not included.
You must have the email address and password for each BigRock account.
The process is time-consuming for multiple mailboxes or large accounts.
Furthermore, no option to filter by folder, date range, or specific emails.

Verified Solution to Migrate BigRock Email to Office 365

To avoid all the limitations of the manual method, it’s highly suggested to use the professional CloudMigration IMAP Email Backup Tool. This tool allows you to migrate all your BigRock emails to Office 365 at once with no data loss. You can preserve original data formatting, structure, and metadata during the migration. Also, it allows you to migrate Hostinger Email to Google Workspace and other formats.

One-Time Service Option:

Prefer not to install software? For a safe and budget-friendly option, you can contact our support team to perform a one-time BigRock Emails to Office 365 migration on your behalf.

Simple Steps to Migrate Emails from BigRock to Office 365:

Firstly, download and install the CloudMigration IMAP Backup Tool.

Now, enter your BigRock email credentials, ID, and Password to Log In.

Then, review and choose the emails that you want to migrate. Click Next.
After that, pick IMAP as the Saving Format from the available options.

Next, write your Office 365 email address and password to Log In.

Lastly, use features to customize the migration and click Start Process.

Why Choose CloudMigration IMAP Backup Tool?

Offer features: Preview, Remove Duplicate, Date Filter, and more.
Ability to archive IMAP Email in Thunderbird and several other formats.
It has a simple interface, which means no technical skill is required.
Furthermore, highly compatible with all Windows and Mac versions.

Real-Life Scenario:

Ozen runs a small graphic design agency with five team members. They used BigRock email for years to communicate with clients. As the team grew, managing emails became harder. Ozen wanted to move BigRock Email to Office 365 for better tools like Outlook and Teams. After extensive research, he found the CloudMigration IMAP Backup Tool. With this tool, Ozen logged in using his BigRock credentials and picked the emails to transfer without losing any emails.

Conclusion

In this technical blog post, we discussed the top two methods to migrate BigRock Email to Office 365. The manual method is free to use, but it’s not an ideal solution for every user. Due to its limitations. This method helps you migrate only a few emails and requires technical skill to perform. That’s why it’s highly suggested to use the professional tool. It gives you a guarantee of 100% accurate migration with zero data loss or minimal disruptions. Moreover, a free verison of this software is available to understand its features and functions.

Frequently Asked Questions

Q1. Which is the best tool to migrate BigRock Email to Office 365?

Ans: The CloudMigration IMAP Backup Tool is the best tool to migrate BigRock emails to Office 365. It supports batch migration with several advanced features.

Q2. What are the prerequisites for BigRock Email to Office 365 migration?

Ans: Before performing the migration of BigRock email to Office 365, migration:
Admin access to both BigRock and Office 365 accounts.
Email addresses and passwords for all BigRock accounts you want to migrate.
Stable internet connection to ensure smooth migration.

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.