- Oct 31, 1999
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Does anybody know exactly how do these services are able to tell if you OPENED your email or not?
It claims to work even with web-based email services, such as Hotmail and Yahoo.
It seems to have the capability of doing it automatically.Maybe embedding some code in the email?
ReadNotify.com
ReturnReceipt.com
It claims to work even with web-based email services, such as Hotmail and Yahoo.
It seems to have the capability of doing it automatically.Maybe embedding some code in the email?
ReadNotify.com
ReturnReceipt.com