Best Way to Seamlessly Transfer Mailbox Data to an IMAP Account

[ishasingh]

Finding a reliable way to migrate Office 365 to IMAP server can be challenging, especially when you want to preserve emails, folders, and attachments without downtime. A dependable method is to use a specialized solution like Office 365 Backup Software, which helps securely extract and transfer mailbox data into an IMAP-supported account while maintaining structure and integrity. This approach ensures smooth migration, reduces manual effort, and provides a safer, more controlled process for moving cloud emails to any IMAP-based platform.

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[armantsarkaun]

If you want a smooth O365 → IMAP transfer, the most reliable approach is to export the mailbox first, then import it into the IMAP account in smaller batches. This avoids throttling issues and keeps folder structure intact.


Also make sure the IMAP server has enough storage and that you disable any rate limits during the migration. Doing a small test mailbox before the full move helps catch issues early.