Migrate BigRock Email to Office 365 – Complete Guide

Written By
Shivansh Shukla

Updated on
February 6th, 2026

6 minutes Read
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Summary: “I have BigRock as my business email host, but my team is switching to Office 365 for better tools like Teams and SharePoint. How can I move all my legacy emails, contacts, and calendars from BigRock to Office 365 with zero loss? I’m a non-technical person and need a clear, concise, step-by-step guide.”

If the above situation sounds just like you, the good news is you are in the right place. The thought to migrate BigRock email to Office 365 can be overwhelming and daunting. The fear of losing emails, contacts, and calendar items is very real. Definitely, we can relate! But you must know that it is not complicated at all, and you do not need to be a tech genius. This blog defines easy solutions and an IMAP Backup Tool for a seamless and secure data migration. 

Checklist to Migrate from BigRock to Office 365

Before you understand the prerequisites, know how the business pressure demands BigRock to Office 365 migration:

  • Teams departs from just email to unified apps (Teams, OneDrive, SharePoint).
  • Storage demands in O365 far surpass what BigRock can provide comfortably.
  • Clients expect secure, compliant-ready communication via M365.
  • Remote work makes anywhere access a necessity with Office 365.

So, it’s just not about switching from one account to another, but ensuring a secure workflow in the near future.

Furthermore, the things you need to prepare before you migrate BigRock email to Office 365 are mentioned below.

  • Ensure you have set up an active O365 business plan (with BigRock, Business standard). Also, have at least licensed yourself as the admin.
  • User ID and password for your BigRock Control Panel and Office 365 Admin Center.
  • A CSV list of all the BigRock email addresses you plan to migrate.
  • After the migration, update your MX records to confirm email delivery to Office 365. (Do not do this until data migration completes.)

How Do You Migrate Email from BigRock to Office 365?

Below is the manual method and a professional software that enables a swift, secure, and reliable migration. Along with that, we have also specified which method is best to use with the reasons. We will begin with the free solution first and then look at the better alternative.

Free Migrate BigRock Email to Office 365

This is the best way with the use of IMAP sync and Microsoft’s built-in service. The steps are:

Part 1: Prepare Office 365 and BigRock Accounts

  1. First, get an Office 365 subscription and then go to admin.microsoft.com.
  2. There, from Setup, choose Domains >> Add Domain.
  3. It will ask you to add a TXT record to verify the domain’s DNS settings, which is currently at BigRock.
  4. Further, complete the process to add your record and create user mailboxes. 
  5. In the O365 Admin Center, from Users, access Active Users and press Add to give them a name and a licence.

(Check that the username matches the BigRock email addresses.)

  1. Afterward, log in to BigRock Control Panel >> Email Accounts.
  2. Select your email client to transfer and press on Manage >> Configure Mail Client.
  3. Finally, ensure your IMAP access is on and the settings are as follows:
  • Incoming Mail: mail.bigrock.com/imap.bigrock.in
  • Port Number: 993 with SSL

Part 2: Migrate BigRock Email to Office 365

  1. In Admin Center, from More Options, access Migration

(Or, from Setup >> Data Migration).

  1. Then, choose IMAP for your type of migration and create an endpoint.
  2. Further, press Add a migration endpoint and, using BigRock IMAP details, complete the endpoint creation.
  3. Later, test your connection and proceed to create a Migration Batch.
  4. Afterward, choose Create a new batch and upload a CSV file with BigRock user details.
  5. At last, configure all settings and start the batch. Check the progress in EAC.

Part 3: Complete Transfer BigRock Email to Office 365

  1. If the status turns to “Synced”, this means your migration batch is complete.
  2. Next, in the BigRock CP or DNS host, change your MX Records to Office 365.
  3. Wait upto 48 hrs for the DNS changes to take place globally. Once it finishes, your migration is complete.

This is the lengthy and risky migration process. Let’s take a look at another one.

Hassle-Free Way to Migrate BigRock Email to Office 365

The teams and enterprises with heavy mail and large mailboxes may use the MacSonik IMAP Backup Tool for migration. It supports all mailboxes and enables saving their data in bulk without loss to Office 365 and several other clients. Additionally, it supports many file formats and offers filters to preview and customize the output. Moreover, this simple tool is reliable for all techies and non-techies, unlike the manual method. 

Quick Update:

Download MacSonik IMAP Email Backup Tool Trial Version and convert upto 50 emails for free. For any queries or custom migration, Reach Out to Our Tech Experts

Working to Migrate from BigRock to Office 365

  1. Download the software and log in to your BigRock email account.
  2. Then, select the required mailboxes from the tree structure. Tap Next.
  3. Further, you select Office 365 from the drop-down and enter your Exchange ID.
  4. Click Login, or you can use Assign Impersonation to opt for user mailboxes.
  5. After that, select the Mailbox/Online Folder/Public Archive and tap on Next.
  6. In the end, apply filters as you require and click Convert to migrate data.

Conclusion

The ability to migrate BigRock email to Office 365 is crucial for businesses to meet modern needs. The manual process is suitable for a few emails from the mailbox, but it cannot be used in large scenarios. Also, the freeway is prone to connection timeouts, which can result in losses. So, the best way out is to use an automated tool, which feasibly transfers the data between two email clients. Moreover, it can ensure that no losses and downtime occur in the migration.

Frequently Asked Questions

Q1. Why should I consider migration from BigRock to Office 365?

Ans- Office 365 offers ultimate features and benefits beyond those of BigRock’s storage options of 5-30 GB and general functionality. O365 can store up to 50 GB with Microsoft Teams and DLP security.

Q2. Can I manually migrate email from BigRock to Office 365?

Ans- Yes, you can do it by syncing both accounts within an IMAP client and using drag and drop for transfer. Or, you can try the Office 365 Admin Center process as specified above. However, both methods are tedious and leave room for error when dealing with large mailboxes.

Q3. What are the steps to update DNS for M365?

Ans-Post-migration, you should update your MX records in BigRock’s DNS settings to those of Office 365’s. This allows forwarding new emails to Office 365. But expect DNS changes to take up to 48 hours to display. 

Q4. Is there a tool available to transfer BigRock email to Office 365?

Ans-Yes. Using the IMAP Mail Backup Software, you can simplify the migration between email clients. It is secure, allows batch migration, is simple to use, and preserves the data. 


About The Author:

Shivansh Shukla is a technical content writer who researches and provides reliable solutions to help users resolve their problems. He offers effective procedures for email migration, data backup, and file conversion for all technical and non-technical users.

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