python email utils

email_utls.py

import os
import warnings
import traceback
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.application import MIMEApplication
import getpass

# email_server coule be email_server+":"+port
# password could be optional `None`
# send email
def send_email(
    email_server,
    sender_email,
    to_email_list,
    to_subject,
    text_body,
    file_list=[],
    password=None):

    msg = MIMEMultipart()
    msg["From"] = sender_email
    msg["To"] = ", ".join(to_email_list)
    msg["Subject"] = to_subject
    msg.attach(MIMEText(text_body, "plain"))

    for file_path in file_list:
        with open(file_path, "rb") as fil:
            part = MIMEApplication(
                fil.read(),
                Name=os.path.basename(file_path)
            )
            part['Content-Disposition'] = f'attachment; filename="{os.path.basename(file_path)}"'
            msg.attach(part)

    text = msg.as_string()
    s = smtplib.SMTP(email_server)
    if password is not None:
        s.ehlo()
        s.starttls()
        s.login(sender_email,password)
    s.sendmail(sender_email,to_email_list,text)
    s.quit()
    return True