I was curious the last time I sold tickets so actually called them asked about this. The emails are aliases to verify the tickets are valid, then they are forwarded to the buyer.
Usually the format is <email prefix of buyer>@<stubhub controlled domain> and the tickets are forwarded pretty quickly. This way stubhub can actually validate you sent over a PDF + the contents of those PDFs or images if the buyer disputes delivery.
Usually the format is <email prefix of buyer>@<stubhub controlled domain> and the tickets are forwarded pretty quickly. This way stubhub can actually validate you sent over a PDF + the contents of those PDFs or images if the buyer disputes delivery.