-
Written By
Simran Bhatia -
Approved By
Sonika Rawat -
Updated on
March 7th, 2026 -
Read Time
6 minutes
“I have a bunch of email files from Zimbra Mail stored in TGZ format, and I need to move them into Outlook in PST format. I have already tried to extract the TGZ archive, but was unsuccessful. I am stuck and need a suitable solution to save TGZ to PST, so that I can access my emails, contacts, calendars, and more from Zimbra in my Outlook account. Please Help!”
-Kate Walsh, Florida
It is quite clear that the two formats belong to different email clients and are quite different from each other. But they both can save entire contacts, emails, calendars, notes, and other data altogether within them. Since it is important to understand what you are dealing with, let’s first understand the two formats at a glance:
|
TGZ (Tarball File) |
PST (Personal Storage Table) |
|
A compressed Zimbra archive created with tar and gzip to take up less storage space |
A lightweight Outlook database file with all the contents for simplified data accessibility |
|
Can be used and opened only on the Zimbra desktop |
Is accessible across all Outlook and MS Exchange platforms |
|
Zimbra must be installed for its access |
Can be opened natively on Windows Outlook |
Understanding the difference, also check out the benefits you receive with this TGZ to PST conversion:
Explore a manual method and professional software in this section, created for file conversion. The former offers control but has limitations compared to being free, and the latter is automated with control, data security, and flexibility. To find out your ideal solution, check their stepwise processes below.
The manual method allows you to handle Zimbra emails technically with the native application, but it is not recommended. The steps are:
SysInfo Zimbra Converter is the most efficient, scalable, and simplified solution to securely convert bulk files in one go. It has complete data integrity, keeps the folder structure preserved, and converts files with 100% accuracy. This tool is specially built to handle TGZ file conversion and doesn’t require Zimbra installation. You can easily secure every piece of data effortlessly with this excellent tool in a few simple steps.





Key Capabilities:
This guide covered all the major conversion needs, the file format differences, and the methods available. You can convert TGZ to PST, whether with a few files or very large volumes, easily by following the methods above. Use the manual method if you have technical expertise and can handle data securely. Also, if your files for conversion are fewer. But with multiple TGZ files, and to perform conversion without Zimbra installation, download the SysInfo Zimbra File Converter Tool. It will efficiently retain all your data safely, function offline for data security, and is trusted by many professionals and experts.
Ans. No, Outlook cannot open Zimbra TGZ files directly because first, they are compressed, and second, Outlook’s native file format is PST.
Ans. Yes, of course. If you convert Zimbra TGZ files to PST with the automated Zimbra Converter, then attachments are preserved in their original form.
Ans. Outlook has a practical limit for PST files, i.e., 50 GB for newer versions and 20 GB for older versions. But during the conversion, the smart converter tool has no file size limitation. You can add TGZ files of any size, and it will convert them without errors or loss.
Ans. Yes, you can convert multiple TGZ to PST at once with Zimbra Mail Converter by SysInfo. It has no limits on the number of files you upload.
About The Author:
Simran Bhatia is a technical content writer engaged in writing clear, concise, and SEO-optimized content. With a background in computer science and a passion for writing, I thrive to deliver complex technical content in simple layman terms.
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