Gmail Blog : -Problem Unread conversation Has Been Fixed

After a long period of wait Gmail has updated “Mark as Unread” in conversation with a very useful feature. As we all love to use Gmail not for its popularity but because of the features they provides to us. As we all know that conversation with same person is clubbed while receiving and sending mails. Now in past we experienced a problem of mark as unread if we have to mark only one conversation than whole is marked as unread. But after this change now only that conversation is marked as unread which we open first to read. Now don’t need to be panic with searching all mails for needy mails.

Official Gmail Blog: A small (but helpful) change to 'mark as unread'