If you are expecting an email from someone and you still did not receive that email, then firstly check that email in your INBOX or other folders (if you have set some filtering rules).Then check in your "Junk Email" folder. IF you still do not find it, then please send an email to "mailadmin@iitg.ac.in" with the sender's email address or domain and expected email delivery date and time. This will help the email administrator to find the reason for not getting the email delivered to your INBOX.