My wife uses the Gmail web interface. Her university uses Gmail as its email. Yesterday she opens her Gmail account to find thousands of her emails in her inbox (Normally she keeps maybe a dozen in the inbox). Somehow, some server somewhere, routed everything - trash, sent mail etc - into her inbox. On phone with a university tech for several hours. They could not resolve the problem at their level. They in turn began working with Google tech Gmail techs. This has been going on for most of the day. I'm writing on the off chance someone here has seen this before or someone who works for Gmail and may have something to suggest. Thank you for posting this peculiar situation.