Diagnostic Tool
POP3 & IMAP Mail Server Detector
Enter any email address or business domain to query official mail hosts, recommended SSL/TLS ports, and authentication methods.
Enter your email or domain to start
The detector queries published autoconfiguration sources and the provider DNS records in real time.
Frequently Asked Questions
Everything you need to know before connecting.
What exactly does POP3 for Gmail do?
It connects periodically to your configured POP3 or IMAP mailboxes, identifies new incoming emails, and imports them seamlessly into your authorized Gmail account.
Does it replace my current email provider?
No. Your existing email host continues hosting your original mailbox. POP3 for Gmail acts as a background bridge between that account and Gmail.
Do I have to change domain DNS or MX records?
No. You do not need to transfer your domain, edit MX records, or purchase paid Google Workspace licenses.
Do Chrome or the extension need to stay open?
No. Scheduled background syncs run entirely on the server. The Chrome extension provides convenient control and monitoring, but the bridge runs independently.
Which email providers are supported?
Any provider that supports secure POP3 or IMAP access (IONOS, Hostinger, cPanel, OVH, etc.). Google and Microsoft accounts can also connect via direct OAuth.
Are email attachments imported?
Yes. Emails are imported with full headers, HTML formatting, and attachments within standard Gmail size limits.
How does it prevent duplicate emails?
POP3 for Gmail tracks unique message identifiers (UIDLs and IMAP UIDs) so emails already imported are safely skipped.
Can I leave a copy on the original mail server?
Yes. For POP3 mailboxes, you can configure whether to keep a full copy intact on the source server.
Can I send emails from my external address?
POP3 for Gmail detects your verified SMTP server and the Chrome extension can assist in configuring Gmail’s native "Send mail as" feature. Note that Google will deprecate third-party "Send mail as" in January 2027; outbound SMTP will continue working, but Gmail’s native alias UI will change.
Will receiving mail continue working after January 2027?
Yes. POP3 for Gmail does not rely on Gmail’s deprecated "Check email from other accounts" setting. It fetches mail externally and delivers it via the Gmail API.
Keep using Gmail. Only change how your mail arrives.
Connect your first mailbox, verify your settings, and let POP3 for Gmail maintain seamless background synchronization.
No DNS modifications · Guided setup wizard · Disconnect anytime