Not only Paragon but also most Placement Consultants and quite a few prospective Employers use Job Portals to approach candidates.
You would be surprised at the number of mails that bounce stating "Mailbox unavailable". The most probable reason is that some mail services automatically discontinue the mail ID if you have not accessed it for some time.
You have taken the trouble to register and put up your resume on Job Portal. Do take the trouble of keeping your contact details updated.
