Simple tool for sending email with sendmail, postfix or ssmtpd.
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''' simple tool for sending email with sendmail, postfix or ssmtpd
import pysema
send(
['alice@example.com', 'bob@example.com'],
'really good subject line',
'Message body goes here'
)
'''
import subprocess
from email.message import EmailMessage
# path to the sendmail programm
SENDMAIL_PATH = '/usr/sbin/sendmail'
class SendMailException(Exception):
''' Exception while using pysema '''
pass
def send(to=None, subject='', message='', **headers):
msg = create_message(to, subject, message, **headers)
send_message(msg)
def create_message(to=None, subject='', message='', **headers):
if isinstance(to, str):
recipients = to
elif isinstance(to, (list, set, tuple)):
recipients = ', '.join(to)
else:
raise SendMailException('No recipients given')
# ensure that the 'from' keyword (if given) is uppercase
sender_mail = headers.pop('from', None)
if sender_mail is not None:
headers['From'] = sender_mail
headers['To'] = recipients
headers['Subject'] = subject
msg = EmailMessage()
msg.set_content(message)
for key, value in headers.items():
msg[key] = value
return msg
def send_message(msg):
if not isinstance(msg, EmailMessage):
raise SendMailException('Type Error: not an EmailMessage')
try:
subprocess.run(
[SENDMAIL_PATH, '-t', '-oi'],
input=msg.as_bytes(),
check=True
)
except subprocess.CalledProcessError as e:
raise SendMailException from e