How to Migrate SmarterMail to Microsoft 365? Updated Guide

  Rollins Duke
Rollins Duke   
Published: February 2nd, 2026 • 4 Min Read

Migrating emails from SmarterMail to Microsoft 365 is not as simple as copying files from one folder to another. Microsoft 365 is not compatible with SmarterMail mailbox data. The good news is that you can easily migrate SmarterMail to Microsoft 365. This blog is specially written for this purpose. We will share all possible methods to migrate multiple email accounts including reliable options to transfer selective folders or specific time periods of mailbox data. So, keep reading this guide to know the reliable steps for migrating all your mailbox data.

Why Migrate from SmarterMail to Office 365?

  • Microsoft 365 offers cloud-storage to easily access from anywhere without depending on any specific device. Unlike SmarterMail, which requires an on-premises or local infrastructure to store mailbox data.
  • In Microsoft 365, your emails are secured with enterprise-grade security, including Multi-Factor Authentication, and encryption.
  • Microsoft 365 offers a centralized admin panel to easily manage users, mailboxes, permissions and policies.
  • Migrating to Microsoft 365 eliminates the need for local storage, reduces downtime, and offers high availability of your email system.

Manual Method: How to Migrate SmarterMail to Office 365?

As migrating SmarterMail to Microsoft 365 is technically possible when using IMAP, this approach comes with lots of risks and restrictions that every IT Admin should understand. Manual migration can work for small-size mailbox data, but it often fails when handling large-scale migrations or complex mailboxes.

  1. Log in to your SmarterMail webmail or admin panel.
  2. Make sure you know the credentials for each SmarterMail account.
  3. Check the IMAP details, such as: IMAP Server: mail.yourdomain.com, Port: 993, Encryption: SSL
  4. Log in to the Microsoft 365 portal and ensure the destination mailbox is ready to receive data (folder creation will occur automatically during migration).
  5. Open Microsoft Outlook and click on the file that appears on the upper left corner.
  6. Choose Manual Setup or Additional Server types then select IMAP.
  7. Enter your SmarterMail credentials and server settings.
  8. Configure your Microsoft 365 account in the same Outlook application.
  9. Select the SmarterMail mailbox data and drag and drop it into the Microsoft 365 account.

Why Manual Migration Is Risky for Large Mailboxes?

  • IMAP only allows to transfer emails, this manual approach is not reliable to transfer contacts, calendars and other data.
  • It will take lots of hours or even days to complete the migration.
  • Emails may fail to transfer, leading to missing data or a broken folder structure.
  • Read/unread status, attachments, and timestamps may not be transferred accurately.

Automated Method: How to Transfer SmarterMail Emails to Microsoft 365?

If you want to migrate all SmarterMail mailbox data like emails, contacts, calendars or any other data then BitRecover SmarterMail Converter is the reliable option, as it can handle batch email accounts and easily migrate without requiring expertise in IMAP as it directly verifies accounts using OAuth Authentication.

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  1. Download the SmarterMail to Microsoft 365 Migration Tool on your PC.
    Launch SmarterMail to Microsoft 365 Migration Tool
  2. Click on Select Folder and Files to load your SmarterMail data into the tool.
    Select SmarterMail files
  3. After clicking on the Next button, select the SmarterMail folder you want to convert.
    Select SmarterMail folders
  4. Choose Microsoft 365 in the list of saving options.
    Select Microsoft 365
  5. Enter your Microsoft 365 email address and verify it using OAuth authentication.
    Verify Microsoft 365 with OAuth
  6. Click Convert to start migrating SmarterMail to Microsoft 365.
    Start Migrate Emails from SmarterMail to Microsoft 365

Benefits of Recommended Software

  • This software is reliable for batch migration of SmarterMail mailbox data.
  • It is especially helpful for novice users and is known for maintaining accuracy identical to the source file.
  • With this tool, users can also use filter options like Date Range, From, To, Subject, and many more for selective conversion and skip unwanted data.
  • With this wizard, you can select specific folders to convert without requiring conversion of the complete SmarterMail mailbox data.
  • It offers background conversion, so you can minimize the software window, and the software will notify you automatically when the process is complete.

Conclusion

In this tutorial, we have explained all tried-and-tested methods to easily migrate SmarterMail to Microsoft 365 account. We have shared both the manual approach and SmarterMail to Microsoft 365 Migration Tool. Users can compare both of them based on size, difficulties and migration risk. It clearly explains why tools become crucial for migration as emails store crucial details like organization data, business records, long-term records that the user doesn’t want to take any risk in this type of situation. You can use recommended software.


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