Corbett
Corbett Email Migration Tool copies one live mailbox into another account. Gmail, Microsoft 365, Outlook.com, Yahoo, Zimbra or any IMAP host can sit on either side. Folder hierarchy, dates and read/unread status stay intact. Windows only.
Download free demo Purchase now
Mail travels between the two providers through the local PC. Corbett stores none of it.
Free demo, scanned clean on VirusTotal and a 30-day money-back window.
Lifetime licence from $99 Free trial moves 10 emails per folder
Supported platforms
All 209+ supported services work on the source side and the destination side, so Gmail to Microsoft 365 runs the same way as Zimbra to Yahoo.
Cloud to cloud
On-premises servers
Desktop clients
Any IMAP server
Moving a full team instead of one mailbox?
Load source and destination pairs from a CSV file and the email migrator maps all user accounts in one batch, one row per user.
Core features
Four screens of the email migration tool in run order, from sign-in to final report.
Both ends at once
Choose the source and destination services and the tool finds the IMAP host and port for both. Providers that use OAuth 2.0 show their own consent window, so neither password ever enters the software.
Scope the move
The source account opens in a checkbox tree showing how much mail every folder holds. Untick Spam and Trash so junk never reaches the new account.
Narrow it down
Filters apply before migration starts, so a five-year archive can move over with only its last two years. That helps when the new account has a smaller storage quota.
Where it lands
On Microsoft 365, migrated mail can land in a primary, archive, shared or public folder mailbox. Archive and shared targets suit mail kept for records instead of daily use.
Before migration
Email migration tool copies a mailbox from one live account into another and keeps folder structure, dates and read/unread status. Corbett runs one cutover per job, not an ongoing sync.
Yes
A single cutover
Switching email providers, closing an old account or moving a full domain to a new host. One run copies the mail and the job is done.
No
Scheduled delta sync
Corbett has no scheduler and no incremental (delta) mode. A second run copies the full selection again, and duplicate detection skips messages already there.
No
Tenant settings
Mail, folders and contacts move. Security policies, admin settings, licence assignments and Gmail labels stay where they are.
Need mail saved to a file instead of a second account? Use the email backup software, with provider pages for the Gmail backup tool, Outlook.com backup tool, Hotmail backup tool, Office 365 backup tool, Yahoo backup tool, iCloud backup tool, Webmail backup tool and Google Workspace backup tool. To push a saved backup file into a live account, use the email recovery software. To open a file without migrating anything, use the free email viewer software.
Free demo
Test the Migration Route Before Purchase
Install the free email migration tool demo, connect both accounts, select one folder and confirm mail arrives. No mail moves until the run starts.
Download free demoGlobal recognition
Users rate Corbett's email migration tool 4.6 out of 5 from 683 reviews, with listings in these software directories.
CNET
Download.io
UpdateStar
TopSoftware Advisor
SaaSHub
Uptodown
Specifications
Download details
System
Supported editions
Windows 11, 10, 8 or 7 on 32-bit or 64-bit PCs. Windows Server versions from 2008 to 2025 also run it.
No macOS or Linux build.
Corbett has built Windows email utilities since 2020. Migration tickets are answered by the engineers who build the tool.
Full specification
Every source and destination supported by Corbett Email Migration Tool, listed in one place.
Source side
Source mailbox
Destination side
Destination mailbox
To convert one saved email file into another format with no account at either end, use the email converter tool.
Working process
Prefer screenshots? The IMAP email migrator guide shows all email migration tool screens step by step.
Common questions
What the email migration tool moves, what stays in the old account and where the tool stops.
No. There is no scheduler and no incremental sync, so a second pass copies the full selection again. Duplicate detection prevents the same message landing twice, but the scan still covers everything. Plan the move as a single cutover.
Yes, where your source account holds them. Contacts, calendars, tasks and notes travel with the mail. Security policies, admin settings, licence assignments and other tenant-level settings stay where they are.
No. The source is read-only. Mail is copied out, never moved out, so your old account keeps everything until you close it yourself.
Yes. Put one row per user in a CSV file, with the source address in one column and the destination in the next. The software matches every pair and processes them one after another. A CSV report at the end shows what moved for every user.
No. Duplicate detection compares messages before migrating and skips the ones already present. On a partly filled mailbox, narrow the folder selection or date range first to save time.
Yes. On Microsoft 365 your destination can be the primary mailbox, archive mailbox, a shared mailbox or a public folder. Select the type when you connect the destination account.
Yes. Where a provider offers it, you sign in on the provider's own consent screen instead of typing a password into the tool. Services that still want an app password, which is most of them once two-factor authentication is on, let you generate one in account security settings.
No. Mailbox size and user count are both unlimited. Big migrations take longer because both providers throttle download and upload speed, and a broken connection resumes from the last message moved.
Yes. Zimbra to Microsoft 365, Google Workspace to Gmail, Rackspace to Outlook.com and an old IMAP host to a new one all work. The tool treats both sides the same way, so you can pair any two services on the supported list.
No. Your PC connects to both providers and moves mail between them. Corbett never holds or forwards a message.
No. It runs on Windows 7 to 11 and Windows Server 2008 to 2025 only, with no Mac or Linux build.
The demo connects both accounts, loads the full folder tree and gives you every filter and preview the licensed edition has. Migration stops at 10 messages per folder, enough to test your route before you buy.
Migration routes
Every page below covers one email migration tool route and answers the questions it raises.
More routes: Zimbra to Office 365 migration, Migrate Kerio to Office 365, Migrate MDaemon to Office 365, Rackspace to Office 365 migration, Migrate email from Office 365 to Google Workspace, Migrate IMAP to Gmail, Migrate AOL to Office 365, Transfer Outlook emails to another account, Migrate Gmail emails to Office 365, Migrate Yahoo Mail to Office 365, Zimbra to G Suite migration, Migrate emails from cPanel to Office 365, Migrate email from Zoho to G Suite, Migrate Rackspace email to Gmail, Transfer emails from Yahoo to another account and Google data migration stuck at 99.
User testimonials
683 reviews score the wizard this migration software is built on.
Collected across 683 reviews from software index sites and customer feedback. The three below are unedited.
This is the best email migration tool I've used so far. I found this solution while browsing the web. The software supports and allows you to transfer files from over 100 different email services. I would recommend this tool for its excellent performance.
Due to some office purpose, I needed to migrate emails from AOL account to my main email account. After searching for the solution, I came across this email migration tool that did the entire task in a fraction of the time.
My company recently acquired a small business with 50 personalized email addresses. We needed to take control of all the information for the audit. The Email Migrator helps us to migrate data from custom domain to our facility with complete information.
Get started
Download the migration demo, connect both accounts and move 10 emails per folder for free. One $99 payment buys a personal licence, refundable inside 30 days.
Download free demo Purchase now
87.4 MB · Windows 11 to 7 and Windows Server 2025 to 2008 · 30 day money back