The act of passing on an email to another recipient typically does not provide any direct notification to the original sender. This means the individual who initially composed and sent the message will remain unaware that the email has been shared unless the recipient of the forwarded email explicitly informs them.
The absence of sender notification maintains a degree of privacy for the person forwarding the message. This can be important for internal communications within organizations, or for sharing information with trusted parties without immediately alerting the initial author. Historically, email systems were not designed with built-in forwarding notifications, focusing instead on the simple transmission and receipt of messages. This design principle persists in most modern email platforms.