Please do not include deletion of contacts when you delete emails due to inactivity (which is already terrible, life got busy and I was a month and a half late apparently to prevents years of memories from being destroyed). Contacts do not take up nearly as much space as emails with attachments. At the very least these could have been saved. This would greatly increase customer value proposition and make customers feel like you care, which would in turn, increase use and interest in back into Yahoo.