By mail source - select the appropriate mail folder on the left:
Inbox( Inbound ): Means that the mail was sent to your email address.
Sent( Outbound ): Means that the mail was send from your email address.
By mail category as determined by the system - select from the top:
Spam
Missed Spam:When the user tags “Valid” mail with “Spam”, the mail is moved here.
Valid
Missed Valid:When the user tags “Spam” mail with “Valid”, the mail is moved here.
Virus
You can sort by date on the right or use “Filter” to further filter your mail (remember to click “Clear” after you have finished searching to reset the filter).