Read receipts are, at least in Outlook, optional to respond to. So...I don't see a problem. People send mail asking for them because for whatever reasons they have because they want to know if you've read the email. So what? It's not terribly effective as a practice, because the recipient can just ignore them but some people want to send them anyway. Nice to have the option.
Ars continues to discuss the most important topics in tech...
Ars continues to discuss the most important topics in tech...