Univik for Gmail Archive to Outlook Offline Converter

Gmail Archive to Outlook Offline Converter by Univik converts Gmail Takeout MBOX exports directly into Outlook-compatible PST files on Windows. No Google account, no internet connection, no Outlook installation and no uploading your private emails to any third-party server.

Download: Univik MBOX File Converter

Google Takeout exports your entire Gmail mailbox as an MBOX file. Microsoft Outlook stores emails in PST format. These two formats are incompatible by default. Most conversion tools solve this by routing your emails through an online server, requiring you to log in with your Google account or install Outlook as a prerequisite. This tool converts the exported MBOX file directly to PST on your Windows PC. Your emails never leave your machine at any stage of the process.

Online Gmail to Outlook converters require you to grant third-party apps access to your Google account. This access persists after conversion unless manually revoked. For users handling confidential correspondence, legal records or business emails, granting that access is not acceptable. Offline conversion from a local MBOX file eliminates that risk entirely. You run Google Takeout once, download the MBOX file and convert locally. No credentials, no OAuth tokens, no server access required.

Offline PST Conversion: Converts Gmail Takeout MBOX to PST entirely on your Windows PC with no internet connection at any stage.

No Google Login Required: Works from the exported MBOX file. Your Google credentials are never entered or stored.

No Outlook Installation Required: PST files are generated without a local Outlook installation. Open them in any version of Outlook after conversion.

Batch Conversion: Handles single MBOX files or entire Gmail Takeout archives with multiple label-based MBOX exports in one pass.

Folder Structure Preserved: Gmail labels are mapped to Outlook PST folders. Inbox, Sent, Drafts and custom labels all converted with correct folder hierarchy.

Metadata Retention: Sender, recipient, date, subject, CC and BCC fields retained in every converted message.

Attachment Preservation: All email attachments carried across to the PST output without loss or stripping.

Supports Large Mailboxes: Handles multi-gigabyte MBOX exports from Gmail accounts with years of email history.

Professionals migrating from Gmail to Microsoft 365 who need full email history in Outlook without cloud migration tools.

Legal and compliance teams converting Gmail archives to PST for Outlook-based review and eDiscovery workflows.

IT administrators decommissioning Google Workspace accounts and migrating users to Exchange or Outlook.

Individuals switching from Gmail to Outlook who want a private, offline migration with no third-party access to their inbox.

Businesses exporting Gmail data before a Google Workspace subscription lapses.

Input: MBOX (Gmail Takeout export)

Output: PST (Microsoft Outlook)

OS: Windows 10 / Windows 11 (64-bit)

Runtime: .NET Framework 4.8 or higher

Network Requirement: None, fully offline

Univik builds specialist Windows file conversion tools since 2013.

Full documentation and download: univik.com/file/converter/mbox.html

Support and licensing: univik.com/contact-us.html