Send emails to multi recipients with multiple attachments using python

python_mail_sender.md

A simple script in python3.x to

• Send text emails.
• Send to multiple clients.
• Send multiple attachments (including images, videos, audios and compressed files)

To send email from the local SMTP server (localhost) it is assumed that a mail transfer agent (MTA), like postfix, is already configured on your local system. If not the follow this gist for step by step setup.

To send email from the gmail server you need to allow access for less secure apps in your Google account

python_mail_sender.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
    This script is designed to send emails to multi recepients from local and  other SMTP servers.
    Any kind of documents can be attached with the email to be sent.

    To send the email from the local SMTP server it is assumed that an email client is already
    configured on your local system (postfix, sendmail etc.).

    To send the email from gmail server it is necessary to allow "less secure apps"
     (https://myaccount.google.com/lesssecureapps) in your Google account
"""

import os
import smtplib
import mimetypes
from email import encoders
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.base import MIMEBase

__author__ = 'haccks'
__date__   = 'Oct 16 2018'


def mime_init(from_addr, recipients_addr, subject, body):
    """
    :param str from_addr:           The email address you want to send mail from
    :param list recipients_addr:    The list of email addresses of recipients
    :param str subject:             Mail subject
    :param str body:                Mail body
    :return:                        MIMEMultipart object
    """

    msg = MIMEMultipart()

    msg['From'] = from_addr
    msg['To'] = ','.join(recipients_addr)
    msg['Subject'] = subject
    msg.attach(MIMEText(body, 'plain'))
    return msg


def send_email(user, password, from_addr, recipients_addr, subject, body, files_path=None, server='smtp.gmail.com'):
    """
    :param str user:                Sender's email userID
    :param str password:            sender's email password
    :param str from_addr:           The email address you want to send mail from
    :param list recipients_addr:    List of (or space separated string) email addresses of recipients
    :param str subject:             Mail subject
    :param str body:                Mail body
    :param list files_path:         List of paths of files you want to attach
    :param str server:              SMTP server (port is choosen 587)
    :return:                        None
    """

    #   assert isinstance(recipents_addr, list)
    FROM = from_addr
    TO = recipients_addr if isinstance(recipients_addr, list) else recipients_addr.split(' ')
    PASS = password
    SERVER = server
    SUBJECT = subject
    BODY = body
    msg = mime_init(FROM, TO, SUBJECT, BODY)

    for file_path in files_path or []:
        with open(file_path, "rb") as fp:
            part = MIMEBase('application', "octet-stream")
            part.set_payload((fp).read())
            # Encoding payload is necessary if encoded (compressed) file has to be attached.
            encoders.encode_base64(part)
            part.add_header('Content-Disposition', "attachment; filename= %s" % os.path.basename(file_path))
            msg.attach(part)

    if SERVER == 'localhost':   # send mail from local server
        # Start local SMTP server
        server = smtplib.SMTP(SERVER)
        text = msg.as_string()
        server.send_message(msg)
    else:
        # Start SMTP server at port 587
        server = smtplib.SMTP(SERVER, 587)
        server.starttls()
        # Enter login credentials for the email you want to sent mail from
        server.login(user, PASS)
        text = msg.as_string()
        # Send mail
        server.sendmail(FROM, TO, text)

    server.quit()


if __name__ == "__main__":
    user = 'USER_NAME'         # Email userID
    password = 'XXXXXXXX'      # Email password
    from_addr = '[email protected]'
    recipients_addr = ['[email protected]', '[email protected]', '[email protected]']
    subject = 'SMTP mail test'
    body = 'Hello from SMTP'
    file_path = ['/Path/file.txt', 'image.png', '/Path/clip.mp4']
    
    send_email(user, password, from_addr, recipients_addr, subject, body, file_path)

@DarkHacker420 It's a bit tricky and time taking. You need to modify send_email method and it will do the magic!

Hmm okay