1. send a quick email to someone
shoot/ping me an email when you get out of the meeting
To ‘shoot an email off’ to someone means to quickly send someone an email. This is an informal expression, often used in a business setting. When you 'ping' something you query whether a computer or network is connected by sending an information packet and returning it again. You can 'ping an email' address in order to find out if an email address is valid or not.