Some guy from the UK uses my Gmail address all the time. I once received a British Airlines confirmation for him. After clicking on the link (no authentication required!), I arrived on a page where I could change his notification settings. His phone number was listed there, so I texted him asking that he stop using my email address. He replied back and sounded alarmed that I had his phone number.

I also received a photo of his passport once. Using that, a friend in the UK was able to look up his parent’s home address. I phoned them up and left a message asking that he stop using my email address.

He’s still using it, so I eventually set up a Gmail filter to shunt his likely emails into a separate folder. I’ve changed my password since all this happened, and I don’t get why he still uses my address.