Overview

Method

1.  Go to the search toolbar in Zoho Mail:
   
   
   
2.  You can either search using "contains" and then type in your search term, or by email address (either by sender or recipient's email address), by the email subject or by date(s).  When using the "contains" this will search all the emails containing the term you have searched, whether it is the body of the email or contained in an attachment.