Bring legacy POP3 mail into Gmail, without the chaos.
POP3 to Gmail Importer is a service-run migration tool that syncs POP3 inboxes in controlled batches. Keep your team in Gmail while the importer quietly moves the backlog with encrypted credentials and real-time progress.
Purpose-built for reliable imports
Run the importer continuously, pause any time, and let it pick up where it left off. No more manual exports, no brittle scripts, and no giant one-shot transfers.
Everything you need for a clean migration
Built for consultants, IT teams, and operators who want Gmail as the source of truth without losing old inbox history.
Secure OAuth flow
Users authenticate once, the service refreshes tokens automatically, and Gmail insert scope stays minimal.
POP3 batch engine
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 shared through Firestore for up-to-date counts and easy rollback control.
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
Does it delete mail from the POP3 server?
Yes, after a successful Gmail import. Oversized or failed messages are left untouched.
Can I stop an import?
Yes. Remove the configuration and the service stops the next time it checks.
Will Gmail show original dates?
The importer uses the message Date header to preserve original timestamps.
Is this only for one mailbox?
No. Add multiple POP3 configs per user and track them separately.
Ready to move POP3 mail into Gmail?
Start with one inbox, confirm the flow, then scale to the rest. The importer keeps pace in the background.
Start Import