What should you do if you fail to send or receive email messages using your Gmail account? This is quite a critical issue. Moreover, its seriousness gets escalated when you have to read or send some important or urgent messages. However, there is nothing to panic as you can solve the issue using the troubleshooting links. This is happens due to the server or POP3 or SMTP setting issues. It will take some time to resolve the issue, but you can do it as the troubleshooting links would provide you step by step guidance. Moreover, the Gmail customer care is always at your closest disposal and you can contact the Gmail experts for getting the technical assistance from the Gmail customer care professionals.