How to Transfer Outlook Emails to Gmail (Complete 2026 Guide)

A practical, step-by-step guide to migrating your emails from Outlook to Gmail — covering POP/IMAP import, Google's migration tool, PST files, and how to keep everything organised after the switch.

Switching from Outlook to Gmail sounds simple until you realise you have years of emails, folders, and contacts that need to come with you.

The good news: it's completely doable. The bad news: Microsoft doesn't make it obvious.

This guide walks through every method — from Gmail's built-in import tool to manual PST exports — so you can pick the one that fits your situation and get it done without losing a single email.

Before You Start: Quick Checklist

Before transferring anything, make sure you have:

Important: If your Outlook account is managed by your employer (Microsoft 365 / Exchange), check with IT before migrating. Some organisations restrict email exports or forwarding.

Method 1: Import Outlook Emails Using Gmail (Easiest)

Gmail has a built-in tool that pulls emails directly from your Outlook account using POP3. This is the simplest method for most people.

Step-by-step:

1. Open Gmail and click the gear icon → See all settings
2. Go to the Accounts and Import tab
3. Find "Check mail from other accounts" and click Add a mail account
4. Enter your Outlook email address and click Next
5. Select "Import emails from my other account (POP3)" and click Next
6. Enter your Outlook credentials:
7. Optionally check "Label incoming messages" — this tags imported emails so you can identify them later
8. Click Add Account

Gmail will now start pulling emails from Outlook. Depending on your inbox size, this can take anywhere from a few minutes to 24–48 hours.

Pro tip: Check the "Leave a copy of retrieved message on the server" box if you want to keep your Outlook inbox intact during the transition. Uncheck it later once you've confirmed everything transferred correctly.

Method 2: Google Workspace Migration Tool (For Business Accounts)

If you're migrating a business or Microsoft 365 account, Google's dedicated migration tool handles the heavy lifting — including emails, contacts, and calendar events.

Step-by-step:

1. Sign in to the Google Admin Console (requires Google Workspace admin access)
2. Go to Account → Data migration
3. Select Email as the migration type
4. Choose Microsoft Outlook as the source
5. Enter your Exchange server details or select Microsoft 365
6. Choose the migration start date — you can import only recent emails or everything
7. Add the users whose email you want to migrate
8. Click Start and let the tool run

This method is ideal for teams switching from Microsoft 365 to Google Workspace. It preserves folder structure, read/unread status, and email labels.

Best for: businesses migrating entire teams. Individual users should use Method 1 or Method 3 instead.

Method 3: Export a PST File and Import via Google Workspace Migration for Microsoft Outlook

If you have a local Outlook desktop client with years of archived emails, exporting a PST file gives you a complete backup that you can then import into Gmail.

Part A — Export from Outlook:

1. Open Outlook desktop (Windows or Mac)
2. Go to File → Open & Export → Import/Export
3. Select "Export to a file" → click Next
4. Choose "Outlook Data File (.pst)" → click Next
5. Select the folder you want to export (choose the top-level account to get everything) and check "Include subfolders"
6. Choose a save location and click Finish
7. Optionally set a password for the PST file

Part B — Import into Gmail:

1. Download and install Google Workspace Migration for Microsoft Outlook (GWMMO) from Google's support page
2. Open GWMMO and sign in with your Gmail account
3. Select your PST file as the data source
4. Choose what to migrate: emails, contacts, calendar events
5. Click Migrate and wait for the process to complete

File sizes matter: PST files can be several gigabytes. Make sure you have enough free space on your drive, and expect the import to take a while for large archives.

Method 4: IMAP Sync via Thunderbird (Manual but Flexible)

This method uses Mozilla Thunderbird as a bridge between Outlook and Gmail. It's especially useful when other methods hit roadblocks.

Step-by-step:

1. Download and install Mozilla Thunderbird (free)
2. Add your Outlook account via IMAP:
3. Add your Gmail account via IMAP:
4. Wait for both accounts to fully sync (all folders and emails appear in Thunderbird)
5. In Thunderbird, select the emails you want to transfer from your Outlook folders
6. Right-click → Copy to → select the corresponding Gmail folder
7. Repeat for each folder

This gives you granular control — you can transfer specific folders, date ranges, or even individual emails.

When to use this: When you need selective migration, when the Gmail import tool fails, or when you're moving from a non-standard Outlook setup (shared mailboxes, on-premise Exchange).

Method 5: Forward Future Emails Automatically

If you've already migrated old emails and just want new Outlook emails to land in Gmail going forward:

In Outlook.com (web):

1. Go to Settings → Mail → Forwarding
2. Check "Enable forwarding"
3. Enter your Gmail address
4. Optionally check "Keep a copy of forwarded messages"
5. Click Save

In Outlook desktop:

1. Go to File → Manage Rules & Alerts
2. Click New Rule
3. Select "Apply rule on messages I receive"
4. Under actions, check "Forward it to" and enter your Gmail address
5. Click Finish

This ensures nothing gets missed during the transition period while you fully move to Gmail.

After the Transfer: Keeping Your New Inbox Organised

Migrating thousands of emails into Gmail can make your new inbox feel instantly overwhelming. Here's how to keep it clean from day one:

1. Label your imported emails

If you used Gmail's import tool with the "Label incoming messages" option, all transferred emails will already be tagged. Use these labels to quickly sort and review.

2. Set up filters

Create Gmail filters to auto-categorise future emails — clients in one label, newsletters in another, transactional emails archived on arrival. This prevents the clutter from rebuilding.

3. Clean up duplicates

Some migration methods can create duplicate emails. Search for duplicates by sender and date, and archive or delete the extras.

4. Update your accounts

Don't forget to update your email address on important services — banking, subscriptions, client contracts, social media accounts. Set up Outlook forwarding (Method 5) as a safety net.

5. Consider an AI-powered inbox

Once your emails are in Gmail, tools like Replyless can take organisation a step further. Instead of manually creating filters and labels, Replyless uses AI to automatically sort your emails into split inboxes — clients, brand deals, newsletters, personal — and even drafts replies in your voice.

For creators and founders managing high-volume inboxes, the combination of Gmail + Replyless means you get Google's infrastructure with genuinely intelligent email management on top.

Which Method Should You Use?

Common Issues and Fixes

"Gmail says my Outlook password is wrong"

If you have two-factor authentication enabled on your Microsoft account, your regular password won't work. You need to generate an app password:

1. Go to account.microsoft.com/security
2. Select Advanced security options
3. Under App passwords, click Create a new app password
4. Use this password in Gmail's import tool

"Import is stuck or extremely slow"

Gmail's POP3 import can be slow for large mailboxes. Give it at least 48 hours before troubleshooting. If it's still stuck, try removing and re-adding the account, or switch to Method 3 or 4.

"Some folders didn't transfer"

Gmail's POP3 import only pulls from the Inbox by default. For a complete migration including all folders, use Method 3 (PST export) or Method 4 (Thunderbird).

"Emails arrived but dates are wrong"

This can happen with POP3 imports. The emails retain their original dates in the email headers, but Gmail may sort them by import date. Use Gmail search with before: and after: operators to find emails by their original date.

The Bottom Line

Transferring Outlook emails to Gmail isn't complicated — it just requires picking the right method for your situation. For most people, Gmail's built-in POP3 import (Method 1) gets the job done with minimal effort.

Once your emails are in Gmail, the real opportunity is making your inbox work smarter. Replyless turns a freshly migrated Gmail account into an AI-powered productivity tool — auto-sorting, auto-drafting, and helping you hit inbox zero every single day.

Your email migration is the hard part. Making Gmail actually manageable? That's where Replyless comes in.