In a bid to enhance security for Gmail users, Google is reportedly working on a redesign that would ensure only the recipient can view an e-mail and that too for a specific period of time.

"You'll soon be able to send expiring emails. Working on an email service is hard as you have to be compatible with all sorts of email providers and email clients. But it doesn't seem to be stopping Google as the company is now evolving beyond the simple POP3/IMAP/SMTP protocols," TechCrunch reported late on Friday.