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Written By
Simran Bhatia -
Approved By
Sonika Rawat -
Updated on
September 22nd, 2025 -
Read Time
5 minutes
When a business switches from SquirrelMail, it can maintain its historical data and, at the same time, use modern productivity tools such as Teams, OneDrive, and Outlook. This blog is to guide on how to effectively migrate SquirrelMail to Office 365. It will include a do-it-yourself option and an IMAP Backup Tool for successful migration.
Once widely used as a web client for your email inbox, SquirrelMail now feels limited in relation to current cloud platforms. And, as companies scale, there’s a greater need for collaboration, high-grade security, and integrations, all of which are offered by Office 365. Look at this query to find out the common user concerns:
“We have been using SquirrelMail for years, but it feels outdated and difficult to manage now. We’re moving everything to Office 365. How can we securely migrate our emails from SquirrelMail to Office 365 without any downtime?”
There are crucial factors that make this migration essential:
Since this migration is from one email client to another, it’s obvious that the priority is to keep data secure! So, based on it, we will discuss a manual solution using IMAP and a professional migration utility, which helps migrate data securely and conveniently with accuracy.
As SquirrelMail supports IMAP, and Outlook is a part of the Office 365 ecosystem, you can use it as a mediator. Here are the steps to follow for the migration:
Note: You can use Outlook as a mediator to transfer SquirrelMail to Gmail as well.
Drawbacks of the Manual Method
Users struggling with the free transfers can use this reliable SysInfo IMAP Backup Tool for quick and efficient migration. This tool provides direct transfers for bulk mailbox data from several SquirrelMail accounts at once. Additionally, it offers many unique features and is easy to use for all new and expert users. Moreover, various users have found it useful during critical and urgent situations. Take a look at this real-world case:
“A consultancy firm with 50 employees used SquirrelMail hosted on their shared server. As their client data exchange grew, they faced storage limits, poor access, and frequent sync errors. They decided to process the SquirrelMail to Office 365 migration. Using the IMAP Email Backup Tool, they simply transferred all accounts, including attachments and folder structure, in just a few hours. By Monday, their employees were feasibly working in O365 without disruption.”
Steps to Migrate Mail from SquirrelMail to Office 365
The process to migrate SquirrelMail to Office 365 can be thought of as taking the data from an old, rented server and moving it onto a modern workspace powered by the cloud. SquirrelMail might’ve served us well in the past, but it has now become outdated and does not meet the demands of today. With Office 365, you are not only migrating your data to an email program. Instead, you are converting to a space that has the future of collaboration, secure communication, and business agility. The sooner we do this, the sooner we will have a unified email space, and the sooner your team benefits. And the best way to achieve it without hassle is by using an expert solution.
Ans- No, SquirrelMail does not support an export. You will either need an IMAP configuration or a SquirrelMail Migration Tool.
Ans- It varies, depending on how large a mailbox you are working with and the number of accounts. Manual migration will take some time. An automated IMAP Migration Tool will be much faster and more efficient.
Ans- Yes. If you use a smart IMAP Backup Software, your attachments, metadata, and folders will remain intact when you migrate SquirrelMail to Office 365.
About The Author:
Simran Bhatia is a technical content writer engaged in writing clear, concise, and SEO-optimized content. With a background in computer science and a passion for writing, I thrive to deliver complex technical content in simple layman terms.
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