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Written By Rohit Singh
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Updated on August 21st, 2025
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.
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:
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.
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
| Email Address | user@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 |
Step 2: Import PST to Office 365 Mailbox Account
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.
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
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.
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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