I get regular emails intended for my doppelgänger, and have for many, many years. I know her entire family by proxy—we’ve effectively moved through the same stages of life together, in parallel, across the globe. For a while I used to respond to the more important-seeming messages, but it’s more mailing lists now. She and I are very far away physically—and it’s hard to say whether she knows about me at all, as I don’t mess up the email address in our collective name…

Oddly enough I’m still not sure of her correct address, only those of her correspondents. And in some cases family members.

> What gives you the confidence to say that it was a single individual

Because you can see their first name and last name on the emails you receive.