Email tracking relies heavily on the information provided by the recipient, such as the software and device they are using which is provided by the email client. For location information, we use their IP address and third-party data.
The accuracy of email tracking can be reduced by certain email clients "proxying" requests to Aftersend, meaning that the email client masks the information we need to identify the recipient accurately.
We are very transparent regarding the data we receive, and you will see on all open and click events what and where the events were generated.