When you find this particular error displaying on your desktop, where it tells that your Gmail is temporarily blocked, should not make your worry. It is a temporary halt to your Gmail access and you will soon recover it. The Gmail technical support has various reasons to cite for this abnormal activity. It may be while deleting large number of POP or IMAP emails, sending large number of undeliverable messages, using the file-sharing options. Leaving out the multiple instances of Gmail and it might be due to the unlimited browser options. To know more about such issues and to know how you can regain control, talk to experts at Gmail helpline number.