The@signmustbeencodedbychangingittoan=sign.Similarly,anunsubscriptiontakestheformnnn-unsubscribe-localpart=example.com@bugs.debian.org.Inbothcases,thesubjectandbodyoftheemailwillbeforwardedtotheemailaddresswithintherequestforconfirmation.
What's a sentence that uses these characters?
The @ sign must be encoded by changing it to an = sign. Similarly, an unsubscription takes the form nnn-unsubscribe-localpart=example.com@bugs.debian.org. In both cases, the subject and body of the email will be forwarded to the email address within the request for confirmation.