Users can delete all the emails received from the time of opening their Google account. Many users have hundreds of thousands of emails available in their Google accounts. It will be difficult to delete every message personally when the count is in the hundreds of thousands.  To delete all emails at a single time, click on the all mails option, select the check box and change it to all emails. After selecting the check box, click on the delete option available on the top ribbon of the Gmail application.  This step will enable users to delete all the available messages in their accounts at a time. Deleting is not possible, even if you try. The recycle bin stores all the deleted emails. The spam folder stores deleted emails. Firstly, deleted emails go to servers. It takes 30 to 60 days to permanently delete it. It depends on the type of account. Users can delete mail from the spam folder directly. The type of account used is also influential in these emails.