Spam or Junk folder allows you to check blocked SPAM using IMAP or Webmail.
When you create a new email account, the /Spam or /Junk IMAP folder will be created automatically.
Check SPAM using IMAP - Please read this
Check SPAM using POP - Please read this
Check SPAM from Webmail - Please read this
You should occasionally empty this folder because the space that it uses counts towards your email quota limit.
