client/common_lib/mail.py

   1 import os, email.Message, smtplib
   2
   3
   4 def send(from_address, to_addresses, cc_addresses, subject, message_body):
   5     """
   6     Send out a plain old text email. It uses sendmail by default, but
   7     if that fails then it falls back to using smtplib.
   8
   9     Args:
  10             from_address: the email address to put in the "From:" field
  11             to_addresses: either a single string or an iterable of
  12                           strings to put in the "To:" field of the email
  13             cc_addresses: either a single string of an iterable of
  14                           strings to put in the "Cc:" field of the email
  15             subject: the email subject
  16             message_body: the body of the email. there's no special
  17                           handling of encoding here, so it's safest to
  18                           stick to 7-bit ASCII text
  19     """
  20     # addresses can be a tuple or a single string, so make them tuples
  21     if isinstance(to_addresses, str):
  22         to_addresses = [to_addresses]
  23     else:
  24         to_addresses = list(to_addresses)
  25     if isinstance(cc_addresses, str):
  26         cc_addresses = [cc_addresses]
  27     else:
  28         cc_addresses = list(cc_addresses)
  29
  30     message = email.Message.Message()
  31     message["To"] = ", ".join(to_addresses)
  32     message["Cc"] = ", ".join(cc_addresses)
  33     message["From"] = from_address
  34     message["Subject"] = subject
  35     message.set_payload(message_body)
  36
  37     server = smtplib.SMTP("localhost")
  38     server.sendmail(from_address, to_addresses + cc_addresses, message.as_string())
  39     server.quit()