Gmail is one of the most used email platforms amongst all that available email service providers. People usually choose Gmail because of its simple and easy to use interface. But sometimes Gmail being so popular faces some common errors like Gmail not responding or unable to send mail, although these issues are temporary and can be fixed easily. You can also consult with Gmail customer service as their technicians are always ready to serve you 24*7. They will understand the issue and will provide you with a relevant solution.