Content-Type: multipart/mixed; boundary="AAA" | |
From: Mail Delivery Subsystem <xxx@example.com> | |
To: yyy@example.com | |
This is a MIME-encapsulated message | |
--AAA | |
Stuff | |
--AAA | |
Content-Type: message/rfc822 | |
From: webmaster@python.org | |
To: zzz@example.com | |
Content-Type: multipart/mixed; boundary="BBB" | |
--BBB-- | |
--AAA-- |