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I recently completed a project involving Zimbra to Office 365 migration, and I wanted to share my experience here in case it helps others facing a similar challenge.
Zimbra doesn’t offer a direct built-in option to migrate emails to Office 365. So, after testing a few options, I went with the Cigati IMAP Backup Tool, and I have to say—it worked surprisingly well for what I needed.
Why I chose Cigati IMAP Backup Tool:
IMAP Compatibility: Zimbra supports IMAP, and so does Office 365, which made this tool a good fit.
Multiple Export Options: The tool allows you to export Zimbra emails into various formats like PST, EML, MBOX, etc., which adds flexibility. I used the PST format to import emails easily into Office 365 via Outlook.
Folder Selection & Filtering: It gives options to migrate selected folders and apply date filters, which helped reduce overall data volume and focus only on relevant content.
User-Friendly Interface: Even non-technical users can handle the migration with minimal guidance.
Maintains Email Integrity: During migration, the tool preserved folder structure, metadata, and attachments.
My Migration Steps:
Enabled IMAP access in Zimbra.
Connected the Zimbra account in Cigati using IMAP credentials.
Choose PST as the export format.
Imported the exported PST into Office 365 using the Outlook import option.
Verified data integrity and folder structure in the target Office 365 mailbox.
Final Thoughts:
If you’re planning a Zimbra to Office 365 migration, and want a simple, non-disruptive solution, the Cigati IMAP Backup Tool is definitely worth considering. It saved me a lot of time and hassle.
A straightforward method for exporting Zimbra emails to Office 365 files format is to use the BLR Zimbra email converter. All of the contents of Zimbra mailboxes can be converted to Office 365 emails. Without installing any other application, this program displays a preview prior to migration and keeps track of all Zimbra emails to O365 emails, All Zimbra emails can be instantly exported to O365 email account at once. All versions of Windows Operating System are supported by this program including Windows XP, Vista and more. Get free edition of this solution to test it out. Read More: https://www.blrtools.com/zimbra-export.html
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