What happens if I select the "Allow POP3 access to emails in 'Sent mail' folder" checkbox?
If you select this option in the "POP3 Access" section in the "Settings" tab, emails from the "Sent mail" that were sent from the webmail (not from the mail client) after the POP3 access activation, will be downloaded into your mail client Inbox.
If you want to download sent emails that were sent before POP3 access activation, select the "Allow POP3 access to emails older than POP3 access activation" checkbox.
Click on the "Save settings" button to make the change take effect.