Ask HN: How does Superhuman Mail tracks every recipient independently?
2 by dtarik | 2 comments on Hacker News.
I'm very curious to know how Superhuman manages to track every recipient when an email has been sent to multiple independent recipients. For me email read tracking is done by adding an individual pixel tracker to an email which allows the server that hosts that pixel to know if the email has been open. And it's the same pixel that is sent to all the recepients since the email is a carbon copy so impossible to distinguish between the recipients by name. Is there any magic in the email protocols that allows to send a specific copy of the original email to each recipient while making it look like it's still the same thread?