If an email address is defunct or invalid, the mailing list will send out a message probe. If it still receives an invalid response from the email address in question, it will automatically unsubscribe that email address from the mailing list.
If an email address is defunct or invalid, the mailing list will send out a message probe. If it still receives an invalid response from the email address in question, it will automatically unsubscribe that email address from the mailing list.