In the following example all of the multiple spaces  
in the subject will be compressed into one space  
each.   
   
from email.MIMEMultipart import MIMEMultipart   
   
outer = MIMEMultipart()   
outer['Subject'] = "Subjects   longer than 68  
characters   with    multiple spaces   
get converted to    one space."   
   
print outer.as_string()   
  
  
Will print:  
  
Content-Type: multipart/mixed; 
boundary="===============0820565010==" 
MIME-Version: 1.0 
Subject: Subjects longer than 68 characters with 
multiple spaces get converted 
        to one space. 
 
--===============0820565010== 
 
--===============0820565010==--