How to Migrate Emails from Outlook to Gmail Smoothly?

Category: Migrate Data · 9 Minutes Reading · By Jamie Kaler

Updated May 1, 2025

Migrating emails from Outlook to Gmail is simple when you use the right approach. This guide covers three scenarios: moving emails from Outlook desktop (PST file), Outlook.com webmail, and Mac Outlook (OLM file) to Gmail. You can use free manual methods or the Turgs automated tools for a fast and complete transfer.

If you want to migrate emails from Outlook to Gmail, you are not alone. Millions of users make this switch every year for better storage, smarter filtering, and seamless integration with Google services. Whether you use Outlook on Windows, Outlook.com, or Outlook for Mac, this guide walks you through every reliable method available.

Why Users Migrate from Outlook to Gmail

There are several practical reasons users choose to move their email data from Outlook to Gmail. Understanding these reasons helps you decide the best migration approach for your needs.

Gmail offers 15 GB of free storage shared across Google Drive, Gmail, and Google Photos, making it attractive for users with large mailboxes.
Gmail’s spam filtering is highly accurate and continuously updated, reducing unwanted emails with minimal manual effort.
Google’s ecosystem lets you open attachments like DOCX, PDF, and Sheets directly in Google Workspace without downloading them.
Gmail automatically organizes emails into tabs: Primary, Social, Promotions, and Updates, saving hours of manual sorting.
Gmail works seamlessly on all devices and browsers without requiring a dedicated email client installation.
Organizations moving to Google Workspace prefer to consolidate all email data into Gmail for easier administration.

What to Check Before You Start

A few preparation steps make the migration faster and prevent data loss.

Make sure IMAP is enabled in your Gmail account settings under Forwarding and POP/IMAP before connecting any tool.
If migrating from Outlook desktop, export a PST backup first so you have the original data safe.
If migrating from Outlook.com, note that the free tier allows email forwarding but may have daily limits.
Check your Gmail storage quota. If you have thousands of emails, consider purchasing additional Google One storage.

Important Note: Gmail’s IMAP must be enabled before any migration tool or manual method can connect to your account. Go to Gmail Settings > See all settings > Forwarding and POP/IMAP > Enable IMAP and save changes.

Method 1: Migrate Outlook Desktop Emails to Gmail via PST

If you use Outlook on a Windows PC, your emails are stored in a PST file. The most reliable way to migrate these to Gmail is the Turgs PST File Importer, which reads PST files directly and uploads all emails to your Gmail account.

Step 1: Export Emails from Outlook to PST

Open Outlook on your Windows PC.
Go to File then click Open and Export then Import/Export.
Choose Export to a file and click Next.
Select Outlook Data File (.pst) and click Next.
Choose the folders you want to include (select the top-level mailbox to export everything).
Pick a save location and click Finish.

Step 2: Import PST to Gmail Using the Automated Tool

Use Turgs PST File Importer to upload your exported PST directly to Gmail. The tool preserves folder structure, email metadata, attachments, and read/unread status.

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Method 2: Migrate Outlook.com Emails to Gmail

Outlook.com is Microsoft’s web-based email service. Moving emails from Outlook.com to Gmail can be done via email forwarding manually or using the Turgs Outlook.com Backup Tool for a complete one-time migration.

Manual Forwarding Method

Sign in to Outlook.com and click the Settings gear at the top right.
Go to View all Outlook settings then Mail then Forwarding.
Enable Start forwarding and enter your Gmail address.
Check Keep a copy of forwarded messages if you want emails to remain in Outlook.com as well.
Click Save to activate forwarding.

Note: This method only forwards new emails. It does not move your existing Outlook.com emails to Gmail.

Automated Outlook.com to Gmail Migration

For a complete migration including all existing emails, use the Turgs Outlook.com Backup Tool. This tool connects directly to your Outlook.com account and transfers all emails to Gmail without any pre-configuration.

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Method 3: Transfer Mac Outlook Emails to Gmail

On a Mac, Outlook stores emails in OLM format instead of PST. The Turgs OLM File Converter handles this migration by converting your OLM file and uploading the data to Gmail.

Step 1: Export OLM File from Mac Outlook

Open Outlook for Mac.
Go to File then Export.
Select the data types you want to export (Mail, Contacts, Calendar).
Choose a save location and click Continue.
Outlook will create an .olm file at your chosen location.

Step 2: Convert and Import OLM to Gmail

Use the Turgs OLM File Converter to upload your Mac Outlook data directly into Gmail. It preserves attachments, images, and email headers throughout the process.

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Manual Ways to Move Outlook Emails to Gmail

If you prefer not to use a third-party tool, there are free manual methods to connect Outlook and Gmail. These work best for small mailboxes.

Add Gmail to Outlook and Drag Emails

Open Outlook on your PC.
Go to File then Add Account.
Enter your Gmail address and follow the on-screen prompts.
When prompted, log in to Google and grant Outlook access.
Once Gmail appears in the left panel, select all emails in your Outlook folders using Ctrl + A.
Drag and drop them into the Gmail folder in Outlook.
Wait for Outlook to upload all emails to Gmail via IMAP.

Use Google Workspace Migration for Microsoft Outlook (GWMMO)

Download and install the GWMMO tool from the Google Workspace admin page.
Sign in with your Google account credentials.
Select PST file as the source and browse to your exported PST.
Choose the data categories to migrate: Mail, Calendar, Contacts.
Click Migrate and wait for the transfer to complete.
Check your Gmail inbox to confirm emails have arrived.

Limitations of Manual Methods

Manual migration methods have several drawbacks that become serious issues for users with large mailboxes or complex folder structures.

Time-consuming: Moving thousands of emails via drag-and-drop can take many hours or even days.
No automation: Every step requires manual action, increasing the chance of human error.
Metadata loss: Labels, folder structure, read/unread flags, and timestamps may not transfer correctly.
Missing attachments: Some manual methods skip attachments or inline images.
PST dependency: GWMMO requires a PST file, which means you must first export from Outlook before importing to Gmail.
No resume support: If the process fails midway, you must start over from the beginning.
Version issues: Older PST formats may not be fully compatible with newer GWMMO versions.

Automated Solution for Outlook to Gmail Migration

The Turgs PST File Importer is a dedicated Windows tool built to migrate emails from Outlook to Gmail accurately and efficiently. It works directly with PST files and connects to your Gmail account via IMAP, handling the entire transfer without any manual drag-and-drop.

The tool is suitable for both technical and non-technical users. It preserves the original folder hierarchy, email metadata (sender, recipient, date, subject), attachments, and read/unread status during migration. A free trial version allows you to test the migration with up to 25 emails before purchasing.

Pro Tip: Before running any migration, make sure your Gmail account has IMAP enabled and that you have generated an App Password if two-factor authentication is active on your Google account.

Key Features of the Migration Tool

Directly imports PST files to Gmail without requiring Outlook to be installed.
Supports all Outlook versions including 2019, 2021, and Microsoft 365.
Migrates emails, contacts, and calendar items in a single process.
Preserves original folder structure and email metadata during transfer.
Allows selective migration by choosing specific folders or date ranges.
Works independently without any pre-configuration of Outlook or Gmail.
Batch export mode for users with multiple PST files or large mailboxes.
Compatible with all Windows versions including Windows 10 and 11.

Related Migration Guides

If you are also looking to migrate emails to or from other platforms, the following guides may be helpful:

Frequently Asked Questions

Can I migrate emails from Outlook to Gmail for free?

Yes. You can use the manual method (adding Gmail to Outlook and dragging emails) or the free GWMMO tool at no cost. However, both approaches have limitations for large mailboxes. The Turgs tool offers a free trial for up to 25 emails to test before purchasing.

Will my email folders be preserved after migration?

With the Turgs PST File Importer, yes. The tool preserves your original Outlook folder structure and recreates it in Gmail as labels. Manual methods may not consistently maintain folder hierarchy.

Does migrating emails from Outlook to Gmail delete original emails?

No. Migration tools copy emails to Gmail without deleting anything from Outlook. You can choose to delete the originals manually after confirming the migration was successful.

How long does it take to migrate emails from Outlook to Gmail?

This depends on the number of emails and your internet speed. A mailbox with 5,000 emails typically migrates in 30 to 60 minutes using the Turgs tool. Manual drag-and-drop for the same mailbox could take several hours.

Can I migrate contacts and calendar items along with emails?

Yes. The Turgs PST File Importer supports migration of emails, contacts, and calendar items from PST files to Gmail. Select the data types you want to include before starting the migration.

Is it safe to migrate Outlook emails to Gmail?

Yes. Migration tools like the Turgs PST File Importer use your local machine to process the migration. Your PST file data is processed locally and uploaded directly to your Gmail account over an encrypted HTTPS connection. No third-party server receives or stores your email data.