Migrate and Sync POP3 Email to Gmail,
Continuously.
POP3 to Gmail Sync is a service-run tool that helps you migrate legacy email and keep POP3 inboxes synchronized with Gmail. Keep your team in Gmail while the service quietly syncs the backlog and new messages in the background.
Purpose-built for continuous sync
Run the sync continuously, pause any time, and let it pick up where it left off. No more timeouts or "all-or-nothing" migration attempts.
Everything you need for a clean sync
Built for consultants, IT teams, and operators who want Gmail as the source of truth. Whether migrating from cPanel, moving a legacy archive, or seeking a reliable alternative to Gmail's native POP3 fetcher, our service handles the load.
Secure OAuth flow
Users authenticate once, the service refreshes tokens automatically, and Gmail insert scope stays minimal.
Continuous Sync
Connects, processes a batch, closes, and repeats on schedule to avoid flaky long-lived sessions.
Oversize handling
Oversized messages are left on the POP3 server with a Gmail notification so nothing is lost.
Live status
Progress is tracked in real-time, giving you full visibility into the sync status.
A workflow that respects your time
Go from POP3 to Gmail in minutes, then let the service take over.
Connect Gmail with OAuth
One sign-in gives the service the minimum permissions to insert mail safely.
Add POP3 credentials
Client-side encryption keeps passwords protected before they ever hit storage.
Monitor and refine
Track remaining messages, pause configurations, and re-auth when needed.
Security and control by design
Client-side encryption for POP3 credentials, server-side OAuth handling, and minimal Gmail scope.
Errors bubble up quickly, and oversized messages stay on the POP3 server until you decide.
Questions, answered
How do I migrate POP3 email to Gmail?
Sign in with your Google account, add your POP3 server details (hostname, username, password), and the service will automatically start syncing your emails to Gmail in the background. No software installation needed.
Is my data secure during migration?
Yes. Your POP3 password is encrypted in your browser before being sent to our servers using public-key cryptography. We use OAuth for Gmail access, so we never see your Google password. All connections use SSL/TLS encryption.
Can I automatically sync POP3 to Gmail?
Yes. Once configured, the sync runs automatically in the background. It processes emails in batches, pauses between sessions, and continues until all messages are transferred. You can monitor progress in real-time.
Does it delete mail from the POP3 server?
Yes, after a successful Gmail sync. This prevents duplicates and gradually clears your source mailbox. Oversized or failed messages are left untouched for manual handling.
What happens to attachments?
All attachments are preserved exactly as they appear in the original email. They're synced to Gmail along with the message, up to the 10MB message size limit.
What if a message fails to import?
You'll receive an email notification when a message fails to import (e.g., oversized messages). This ensures you know to check and handle it manually—unlike Gmail's deprecated fetcher which fails silently.
Can I stop a sync?
Yes. Remove the configuration and the service stops at the next sync cycle. Emails already synced to Gmail remain in your account.
Will Gmail show original dates?
Yes. The sync preserves the original Date header from each message, so emails appear in Gmail with their original send dates, not the sync date.
How long does migration take?
It depends on the number and size of messages. The service processes emails in reliable batches rather than rushing through everything at once. A mailbox with thousands of messages might take hours to days, but it runs automatically in the background.
Is this only for one mailbox?
No. You can add multiple POP3 configurations per Gmail account and track them separately. Each mailbox syncs independently.
Do I need to keep my POP3 server running?
Yes, until the migration completes. The service needs continuous access to fetch messages. Once all messages are synced, you can safely shut down the server.
What if messages are larger than 10MB?
Oversized messages are left on the POP3 server and you'll receive an email notification. You can then handle them manually by downloading directly or removing large attachments.
Why does it delete emails from the POP3 server?
Deletion after successful sync ensures we don't need to store any metadata about your emails, protecting your privacy. It also prevents duplicates if you later use Gmail's native fetcher.
Can I use this with Gmail's native POP3 fetcher?
Yes. Gmail has deprecated their built-in fetcher, but if you do use both, they work together fine. This service deletes emails after syncing, so Gmail's fetcher won't see them again.
Ready to sync POP3 mail to Gmail?
Start with one inbox, confirm the flow, then scale to the rest. The service keeps pace in the background.
Start Sync