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Written By Amit Chandel
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Updated on October 16th, 2025
George Fin Query: “My business is continuously growing, but we are still using Kerio. Now I want to switch to Office 365 for its cloud-based productivity tools. What are the best ways to switch from Kerio to Office 365?”
Migrating emails from Kerio Connect to Office 365 can be difficult. But with the right processes and tools, it does not have to be. Many organizations migrate Kerio to Office 365 because of its reliability and security, as well as the ability to connect to applications for collaboration. The purpose of this blog is to provide a step-by-step manual solution, and we will also introduce the MailConverterTools IMAP Migration Tool as a great migration solution.
There are several reasons businesses and users choose to migrate from Kerio Connect to Office 365:
This manual approach utilizes Microsoft Outlook as an intermediate tool to transfer emails from Kerio Connect to Office 365. Although this manual method allows migration of Kerio Connect emails to Office 365, it also has limitations.
The IMAP Mail Backup Tool is an easy-to-use tool that ensures a safe and accurate migration of your data from Kerio to Office 365. The tool will automatically skip emails that have been migrated, which helps to prevent errors, duplicates, and saves time. The users can select specific emails or entire folders to migrate, and all the attachments will be organized into the same folder for easy online access. This tool has a simple interface that is easy to navigate, making it a seamless process and a user-friendly solution.
Successful User Case:
“We used Kerio Connect at our company for several years; however, our team grew. And as remote work became the standard model, we recognized the need for a more flexible, cloud-based model was necessary. We made the move to Office 365 to provide the team with a more collaborative experience using Teams and OneDrive. We preferred IMAP Backup Tool to migrate and transition 250+ employee mailboxes from Kerio to Office 365 without any data loss or downtime. The transfer was efficient, and the folder hierarchy, attachments, and legacy emails were pulled into Office 365 in a simplified way.
– Laura M., IT Manager, London
Moving from Kerio Connect to Office 365 is an excellent decision for organizations that want to take advantage of cloud-based productivity, collaboration, and security. While the manual Outlook method does accommodate smaller migrations, it can be tedious, error-prone, and not ideal for bulk mailboxes. The IMAP Backup Tool is a fast, secure, and simple way to migrate Kerio to Office 365.
Ans: You can migrate Kerio emails manually using Microsoft Outlook or use the IMAP Backup Tool. This tool directly transfers emails, folders, and attachments from Kerio to Office 365.
Ans: Yes, when using the IMAP Backup Tool, the original folder structure is preserved, ensuring emails and subfolders remain organized.
Ans: The MailConverterTools IMAP Backup Tool is a top choice for migrating Kerio to Office 365. It supports bulk migration, preserves attachments and formatting, allows selective migration, and provides a simple, user-friendly interface.
Ans: The migration time depends on the number of emails, mailbox size, and internet speed. Using the IMAP Backup Tool, large mailboxes can be migrated efficiently and saving considerable time.
About The Author:
Meet Amit, an experienced SEO expert and content planner. He uses his creativity and strategy to create content that grabs attention and helps brands reach their goals. With solid skills in digital marketing and content planning, Amit helps businesses succeed online.
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