else:
data = open(filename, 'rb')
msg = MIMEText(data.read(), _subtype=subtype, _charset=fileencode)
data.close()

elif maintype == 'image':
data = open(filename, 'rb') # 4E: use fix for binaries
msg = MIMEImage(
data.read(), _subtype=subtype, _encoder=fix_encode_base64)
data.close()

elif maintype == 'audio':
data = open(filename, 'rb')
msg = MIMEAudio(
data.read(), _subtype=subtype, _encoder=fix_encode_base64)
data.close()

elif maintype == 'application': # new in 4E
data = open(filename, 'rb')
msg = MIMEApplication(
data.read(), _subtype=subtype, _encoder=fix_encode_base64)
data.close()

else:
data = open(filename, 'rb') # application/* could
msg = MIMEBase(maintype, subtype) # use this code too
msg.set_payload(data.read())
data.close() # make generic type
fix_encode_base64(msg) # was broken here too!
#email.encoders.encode_base64(msg) # encode using base64

set filename and attach to container

basename = os.path.basename(filename)
msg.add_header('Content-Disposition',
'attachment', filename=basename)
mainmsg.attach(msg)

text outside mime structure, seen by non-MIME mail readers

mainmsg.preamble = 'A multi-part MIME format message.\n'
mainmsg.epilogue = '' # make sure message ends with a newline

def saveSentMessage(self, fullText, saveMailSeparator):
"""
append sent message to local file if send worked for any;
client: pass separator used for your application, splits;
caveat: user may change the file at same time (unlikely);
"""
try:
sentfile = open(mailconfig.sentmailfile, 'a',
encoding=mailconfig.fetchEncoding) # 4E
if fullText[-1] != '\n': fullText += '\n'
sentfile.write(saveMailSeparator)
sentfile.write(fullText)
sentfile.close()
except:

964 | Chapter 13: Client-Side Scripting