Push mail, also known as push email, is a technology that allows emails to be delivered to a device in real-time, without the need for the user to manually check for new messages. This is achieved through a constant connection between the email server and the device, where new emails are instantly pushed to the device as soon as they are received. This eliminates the need for the user to constantly refresh their inbox, providing a more efficient and seamless email experience. Push mail is commonly used on smartphones and other mobile devices, allowing users to stay connected and up-to-date with their emails on the go.