Some mail was not downloaded
After you first enable POP in your Gmail settings, your messages become available in batches as our servers communicate with your mail client. It may take some time for all of your mail to download if you have lots of messages.
Just to be safe, check that you selected Enable POP for all mail in the 'Forwarding and POP/IMAP' section of your Gmail settings. You should also keep in mind that messages in 'Spam' and 'Trash' aren't automatically downloaded. If you'd like to access these messages with POP, please move them to either your 'Inbox,' or to 'All Mail.' And finally, Gmail doesn't download copies of messages sent from within your client, or messages already available in your client.
If you're still having trouble downloading mail, please try the following troubleshooting steps:
- If you're not using recent mode, ensure that the option to Leave messages on server in your POP client settings is not checked.
- Try enabling recent mode in your POP client by replacing firstname.lastname@example.org in the Username field of your POP client settings with recent:email@example.com, and enable Leave messages on server in your POP client settings.
- Try deleting the entry for your Gmail address in your POP client and then re-adding it with all the correct settings. Please note that you may lose your local copy of any previously downloaded Gmail messages.
Recent mode fetches the last 30 days of mail, regardless of any other factors. If you don't check Leave messages on server, your messages will be moved to 'Trash' after download.