junk e-mail
unwanted or unsolicited email, typically in the form of advertising or promotional material.
how do I stop getting junk email?
failed email
When you get mail from a MAILER-DAEMON or a Mail Delivery Subsystem with a subject like Failed Delivery or similar, it means that an email you sent was undeliverable and has been bounced back to you. ... The most common reason for a failed delivery is that the email address you entered isn't valid
we use it for communication
we use it to send messages
Junk emiail VS. failed email
(author: [type your
name here])
