It is a temporary email (aka. temp mail) that expires after the validity time finish and you can use it during that time
You can use it when create accounts in any site instead of your personal email to prevent the spam messages that will be sent to you later
The validity time of the created email finish after 45 minutes with an ability to renew it
After the validity time of the email finishes all messages will be removed from the email (temp mail) to protect your privacy from other users
The site's name is inspired by the meaning of junk mails in Arabic language, the junk mails that we receive daily in our email from the services that we have use our personal mail to register in.