email_send.py

import smtplib
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import make_msgid
from email.utils import formatdate
from email.MIMEImage import MIMEImage


from os import path

def sendmail():
    smtpsrv =smtplib.SMTP("smtp.server")
    
    mail = MIMEMultipart()
    mail["From"] = ""
    mail["To"] = ""     # "mail1@gmail.com, mail2@gmail.com"
    # mail["Cc"] = "mail3@gmail.com, mail4@gmail.com"
    
    mail["Subject"] = "subject"
    mail["Message-Id"] = make_msgid()
    mail["Date"] = formatdate(localtime=True)

    # attachment
    filename = "file path"
    f = open(filename)
    attachment =  MIMEApplication(f.read())
    attachment.add_header("Content-Disposition", 'attachment; filename="%s"' % path.basename(filename))
    mail.attach(attachment)
    
    # html
    msgAlternative = MIMEMultipart('alternative')
    mail.attach(msgAlternative)
    msgText = MIMEText("This is the alternative plain text message.")
    msgAlternative.attach(msgText)
    
    msgText = MIMEText("""
        <h1>Hi</h1>
        <p>
            <h2>pic</h2>
            <img src="cid:image1" width="400" height="300">
        </p>
    """, 'html')
    msgAlternative.attach(msgText)
     
    with open("pic path", 'rb') as f:
        msgImage = MIMEImage(f.read())
    msgImage.add_header('Content-ID', '<image1>')
    mail.attach(msgImage) 
    
    toaddrs = mail["To"].split(",")
    # toaddrs += ["cc email addr1", "email addr2"]
    smtpsrv.sendmail(mail["From"], toaddrs, mail.as_string())
    smtpsrv.quit()