PYTHON send E-mail from eml file endswith 'eml' recursively

send-message.py

#!/usr/bin/env python
# -*- mode: python; coding: utf-8-unix -*-
import sys
import os.path
import smtplib
import gzip
import re
from email.utils import make_msgid
from datetime import datetime

if len(sys.argv) <= 4:
    print('Usage:')
    print('  $ python ' + sys.argv[0] + ' server_ip mailfrom rcptto folder_or_emlfile')
    print
    print('Parameter:')
    print('  mailfrom: MAIL FROM address.')
    print('  rcptto:   RCPT TO address.')
    print('  emlfile:  Message file in eml format. When emlfile is not specified, an empty message will be s                                                                 end.')
    print('  server ip:  SMTP server IP')
    print
    print('Example:')
    print('  $ python ' + sys.argv[0] + ' 127.0.0.1 [email protected] [email protected] mail.eml')
    sys.exit(0)

server = sys.argv[1]
port = 25
mailfrom = sys.argv[2]
rcptto = sys.argv[3].split(',')

message = ''
msgid = "Message-ID: " + make_msgid()

def log(msg):
    today = datetime.now().strftime("%y%m%d")
    now = datetime.now().strftime("%Y/%m/%d %H:%M:%S")
    with open('send.log.%s' % today,'a') as f:
        f.write('[%s] %s' % (now, msg)+'\n')

def sendmail(file):
    if len(sys.argv) >= 4:

        filename = file
        if not os.path.isfile(filename):
            print('[Fail] File "' + filename + '" not found.')
            log('[Fail] File "' + filename + '" not found.')
            sys.exit(0)
        if filename.endswith('gz'):
            f = gzip.open(filename)
            message = f.read()
            f.close()
        else:
            with open(filename) as f:
                message = f.read()

    smtp = None
    try:
        smtp = smtplib.SMTP(server, port)
        #smtp.set_debuglevel(1)
        re.sub("Message-ID: .*",msgid,message)
        smtp.sendmail(mailfrom, rcptto, message)
    except Exception as e:
        print('[Fail] Failed to send mail: %s, %s' % (filename,str(e)))
        log('[Fail] Failed to send mail: %s, %s' % (filename,str(e)))
    else:
        print('[OK] Succeeded to send mail: %s' % filename)
        log('[OK] Succeeded to send mail: %s' % filename)
    finally:
        if smtp != None:
            smtp.close()

def sendmail_recursively(folder):
    for root, dirs, files in os.walk(folder):
        for file in files:
            file_path = os.path.join(root, file)
            if file.endswith('eml') or file.endswith('gz'):
                sendmail(file_path)

if os.path.isfile(sys.argv[4]):
    sendmail(sys.argv[4])

else:
    sendmail_recursively(sys.argv[4])

[2017/05/15] support gzip

[2017/05/18] add change message-id function