Or you can simply use a Chrome extension: https://chrome.google.com/webstore/detail/gmail-pop3-checker/ambimplhoibefinldnkahdbiccabgnki?hl=de
Or you can simply use a Chrome extension: https://chrome.google.com/webstore/detail/gmail-pop3-checker/ambimplhoibefinldnkahdbiccabgnki?hl=de