diff -r Lib/email/generator.py Lib/email/generator.py
24d23
< 
36c35
<                  policy=None):
---
>                  policy=None, raw=False):
62a62
>         self.raw = raw
152a153,155
>         if self.raw:
>             self.write(lines)
>             return
388d390
< 
443d444
< 
diff -r Lib/email/message.py Lib/email/message.py
38c38
< 
---
> 
104d103
< 
130a130
>         self._is_raw_payload = False
177c177
<         g = BytesGenerator(fp, mangle_from_=False, policy=policy)
---
>         g = BytesGenerator(fp, mangle_from_=False, policy=policy, raw=self._is_raw_payload)
302a303,306
>     def set_raw_payload(self, payload):
>         self._is_raw_payload = True
>         self.set_payload(payload)
> 
diff -r Lib/email/mime/application.py Lib/email/mime/application.py
35c35
<         self.set_payload(_data)
---
>         self.set_raw_payload(_data)