11-03-2026 05:56 AM
You may migrate your Microsoft 365 email to Thunderbird by syncing your account manually or through a dedicated data conversion tool.
Sync your Microsoft account using IMAP
To sync your account and synchronize your Microsoft 365 emails in Thunderbird, follow these steps:
Once your account connects and synchronizes, drag and drop your email messages from your Microsoft 365 email account into Thunderbird's Local Folders area for permanent offline storage.
Automatically migrate Office 365 to Thunderbird (Recommended)
The RecoveryTools Office 365 Email Backup Tool is a preferred solution for automated bulk email migration to save your time and effort associated with syncing manually or managing synchronization errors.
Follow these steps to use the tool:
14-03-2026 03:10 AM
Users who easily want to migrate Office 365 to Thunderbird. SysInfo Office 365 Backup Tool is the best utility that can export Office 365 to Thunderbird and many other file formats, such as PDF, EML, MSG, MBOX, and CSV. The tool also migrates Office 365 to many other email clients, like Google Workspace and IMAP. It also provides the option to eliminate duplicates from Calendar, Contact and Task. Moreover, the software supports all versions of Windows and Mac OS.
21-05-2026 04:01 AM - edited 21-05-2026 04:03 AM
Manual migration of Office 365 emails to Thunderbird is not an easy task. It involves IMAP settings and synchronizing huge mailboxes. Folders are not always set correctly, which can lead to errors or incomplete conversion. DataVare Office 365 Backup Tool is an easier and more secure procedure. This utility offers a simple solution for exporting Office 365 mailboxes to Thunderbird-supported file formats such as MBOX. Once converted, you can immediately import the file into Thunderbird without losing email attachments or folder hierarchy. Bulk migration. Data security. No technical skills needed to backup your data. Overall, it gives a secure and hassle-free approach to move Office 365 data to Thunderbird quickly. It will support all Windows OS versions like 11, 10, 8.1, 8, and 7 without any application.