Abstract: An email server receives an email. The email has a list of email addresses that includes the sender email address and the recipient addresses. The email is then sent to the recipients. An indication associated with one of the email addresses, such as the email address is invalid, the email address is for an incorrect recipient, the recipient does not want to receive responses to the email, and the like, is received. In response to the indication, responses to the email are filtered by not sending the response to an email address in the list of email addresses. Other features allow the recipient to identify a correct recipient of email. Also, if an email address was sent with an invalid address, based on a non-delivery report, the invalid address can be removed from responses to the email. The above systems can also be implemented between domains and with peer-to-peer clients.

Abstract: An email server receives an email. The email has a list of email addresses that includes the sender email address and the recipient addresses. The email is then sent to the recipients. An indication associated with one of the email addresses, such as the email address is invalid, the email address is for an incorrect recipient, the recipient does not want to receive responses to the email, and the like, is received. In response to the indication, responses to the email are filtered by not sending the response to an email address in the list of email addresses. Other features allow the recipient to identify a correct recipient of email. Also, if an email address was sent with an invalid address, based on a non-delivery report, the invalid address can be removed from responses to the email. The above systems can also be implemented between domains and with peer-to-peer clients.