sendmail.py

#!/usr/bin/python3

# Easily send emails with attachments from cron
# 
# Mostly stolen from gist https://gist.github.com/srv89/1d3dac6672895f5ca65f
#
# Usage (required params):    sendmail.py to=[to_addr] subject="Subject"
# Usage (all possible params: sendmail.py to="to_addr[,to_addr...]" subject="Subject" body="Message body" attach=path/to/folder/|/path/to/file.ext
#
# Attach can be one of the following:
# /path/to/folder/ # will attach everything from this folder (end with /)
# /path/to/file.ext # will attach only thif file
# NOTE: mail will not be sent if attach is defined but file not found

import os, sys
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.application import MIMEApplication
import json

conf_file = "/etc/sendmail_py.json"
# Conf file example, remember to chmod correctly!
#
# { 
#   "comment": "Conf file for misc-scripts-sendmail.py",
#   "server": "outlook.office365.com",
#   "port" :587,
#   "username" : "some.user@somedomain.fi",
#   "password" : "MyPassword123"
# }
#

if len(sys.argv) < 2:
    sys.exit('USAGE: sendmail.py to=to_addr subject="Subject" [ from=from_addr body="Message body" attach=path/to/folder/|/path/to/file.ext ]')

params = {}
for arg in sys.argv[1:]:
    params[arg.split("=")[0]] = arg.split("=")[1]

try:
    with open(conf_file) as json_data_file:
        conf = json.load(json_data_file)
except:
    sys.exit("Unable to read conf file {}".format(conf_file))

smtp_server = conf['server']
smtp_port = conf['port']
username = conf['username']  # Email Address from the email you want to send an email
password = conf['password']  # Password


from_addr = params['from'] if 'from' in params else username
email_list = params['to'].split(',')
subj = params['subject']
html = params['body'] if 'body' in params else subj
attach = params['attach'] if 'attach' in params else None



# Create the body of the message (a HTML version for formatting).
#html = """Add you email body here"""

# Function that send email.
server = smtplib.SMTP('')
def send_mail(username, password, from_addr, to_addrs, msg):
    server = smtplib.SMTP(smtp_server, smtp_port)
    server.ehlo()
    server.starttls()
    server.ehlo()
    server.login(username, password)
    server.sendmail(from_addr, to_addrs, msg.as_string())
    server.quit()

# Read email list txt
#email_list = [line.strip() for line in open('email.txt')]

for to_addrs in email_list:
    msg = MIMEMultipart()

    msg['Subject'] = subj
    msg['From'] = from_addr
    msg['To'] = to_addrs

    # Attach HTML to the email
    body = MIMEText(html, 'html')
    msg.attach(body)

    # Attach Cover Letter to the email
    if attach is not None:
        file_list = []
        if attach.strip()[-1] == "/":
            try:
                for filename in os.listdir(attach):
                    file_list.append(attach.strip()+filename)
            except:
                sys.exit("Attachment directory {} not found.".format(attach))
        else:
            file_list = [ attach ]

        if len(file_list) == 0:
            sys.exit("No attachments found in directory")

        #sys.exit(file_list.count())

        for file in file_list:
            try:
                open(file)
            except:
                sys.exit("Attachment file {} not found.".format(file))

            cover_letter = MIMEApplication(open(file, "rb").read())
            cover_letter.add_header('Content-Disposition', 'attachment', filename=file.split("/")[-1])
            msg.attach(cover_letter)

    try:
        send_mail(username, password, from_addr, to_addrs, msg)
        print("Email successfully sent to", to_addrs)
    except SMTPAuthenticationError:
        print('SMTPAuthenticationError')
        print("Email not sent to", to_addrs)