How to Migrate BigRock Email to Office 365 – Easy Guide

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  • Updated on August 21st, 2025

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Organizations are shifting towards adopting Microsoft’s ecosystem of apps for effective collaboration. Therefore, they have decided to migrate BigRock email to Office 365. Although shifting emails from BigRock to Office 365 is seen as a complicated task. However, there’s no need to worry. Here you’ll find a detailed explanation of the entire migration process. This will include a specialized tool, the Cigati IMAP Backup Tool, that does the job in no time. Along with this, a cost-effective method will be explained for those who need to migrate a small number of emails.

Reasons to Migrate from BigRock to Office 365

Although BigRock offers reliable services, but lags in the advanced features of Microsoft Office 365. Office 365 has become the go-to solution for businesses to manage their task efficiently. Here are some of the main reasons why users move from BigRock to Office 365:

  • BigRock email services lack advanced functionalities that are often used by professional users. Whereas Microsoft 365 provides smart email features.
  • Unlike Office 365, BigRock has limited storage capacity. With Office 365, users can archive and upgrade storage.
  • Microsoft 365 includes a professional productivity suite. This includes Word, Excel, PowerPoint, OneDrive, Outlook, and Teams. 
  • Major limitations in BigRock are in uptime, speed, and scalability. Office 365 gives a 99.9% uptime SLA. 
  • An all-in-one subscription is provided with Office 365. Whereas BigRock users have to pay separately for different services.

How to Migrate BigRock Email to Office 365?

Two different methods are commonly used. One is through MS Outlook, and the other is by using a specialized automated tool. The next sections will cover each of these methods in detail. Select the most effective solution that best fits your needs.

Manually Migrate Email from BigRock to Office 365

This is the simplest and most common method for both individuals and business users. It works well for those who want all their mailbox data to shift from BigRock to Office 365. 

Consider this step-by-step process to begin the process:

Step 1: Export BigRock Emails to a PST File

  1. Launch MS Outlook and open the File tab to Add Account.
  2. Now, enter the BigRock email credentials and server details:
Email Addressuser@yourdomain.com
IMAP (Incoming Mail Server)Server: mail.bigrock.com
Port: 993
Encryption: SSL
SMTP (Outgoing Mail Server)Server: smtp.bigrock.com
Port: 465 or 587
Encryption: SSL
  1. Next, go to the File tab, press Open & Export > Import/Export.
  2. Choose Export to a file > Next
  3. After that, select Outlook Data File (.pst) and click Next.
  4. Then, select your BigRock mailbox, locate and choose the destination path to save your PST file. Hit Finish.

Step 2: Import PST to Office 365 Mailbox Account

  1. By following Steps 1 (1) and (2), add an Office 365 account in Outlook.
  2. Once it is added, you will see both BigRock and Office 365 accounts in Outlook.
  3. In Outlook, again go to File > Open & Export > Import/Export.
  4. Then, choose Import from another program or file > Outlook Data File (.pst).
  5. After that, find and open the exported BigRock PST file
  6. Now, select the target destination as Office 365 and tap Finish.

Challenges with the Manual Method

  • Manually exporting and importing dozens of emails is highly impractical.
  • Migrating large mailboxes may affect Outlook. It can result in a crash or failure.
  • This manual migration process is only one-time. It does not offer real-time syncing.
  • The IMAP migration process only migrates the emails. Users need to separately migrate the contacts and calendars if required.

Most Reliable Tool to Migrate BigRock Email to Office 365

With the Cigati IMAP Backup Tool, users can simplify their email management by migrating BigRock emails to O365. In addition to Office 365, it also directly migrates to other email clients like Gmail, Thunderbird, etc. Besides this, it can save emails in multiple file formats, export data in bulk, and ensure no risk of data loss. Moreover, built-in features like attachment backup, email filtering, and duplicate prevention make the process efficient. 

Steps to transfer BigRock email to Office 365:

  1. First, install and launch the application.
  2. Then, hit Continue and decide whether to use Single Mode or Batch Mode.
  3. Now, provide the login details of the BigRock account credentials.
  4. Next, mark the mailbox folders you want to migrate to Office 365.
  5. Then, click Next. Choose Office 365 as the destination Email Client.
  6. Proceed by authenticating with your Office 365 email ID and password.
  7. Finally, press Next to execute the migration task.

Conclusion

To sum up, we’ve provided a detailed step-by-step explanation to migrate BigRock email to Office 365. The Cigati IMAP Backup Tool makes the migration process seamless and reliable. Additionally, the tool ensures accuracy and speed, too. After migration, users can take advantage of Microsoft’s enhanced productivity tools and smooth email handling.

You May Also Read: Migrate Postbox to Office 365

Frequently Asked Questions

Q: What are the main reasons to migrate BigRock email to Office 365?

Ans: Users typically migrate for improved features, including larger mailbox storage (Office 365 offers ~50 GB vs BigRock’s 5–30 GB), enhanced security like data loss prevention, spam protection, plus access to productivity tools such as Teams, SharePoint, and OneDrive.

Q: Does migrating BigRock email to Office 365 also move contacts and calendars?

Ans: No. The manual IMAP migration is only email-focused. It migrates only the emails in the Inbox, Sent, and Custom Folders. To migrate contacts and calendars, users need to import and export them separately.

About The Author:

Rohit Singh is an Email Backup, Recovery & Migration Consultant and is associated with Software Company from the last 3 years. He writes technical updates and their features related to MS Outlook, Exchange Server, Office 365, and many other Email Clients & Servers.

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