e-mail: manual client-based forwarding

• https://en.wikipedia.org/wiki/Email_forwarding
• https://www.webopedia.com/definitions/redirect/

A redirect is an option found in e-mail clients that is similar to a forward, with the exception that the body of the text is not normally shown as quoted text. The redirected message reaches the new recepient often in a SPAM folder, supposedly because the new recipient’s software does not detect the (new) recipient as “To” or “CC” recipient and therefore regards the message as some kind of fraud.