round-mail

roundmail.py

#!/bin/env python
# -*- encoding: utf-8 -*-
# Send out "personalised" text mails to a list of people,
# without Cc hacks and without sharing the addresses.
# Uses a gmail account, with "less secure apps" enabled.
# Awaits own address in environment var "U" and password in environment var "P"
# $  U=me@gmail.com P=secret ./thisscript.py
# Note: leading space in the terminal should exlude the command from history

import smtplib, ssl
from email.message import EmailMessage
import os

mailtxt = \
"""
Hi {}!

Lorem ipsum and some more text!

BR,
lnksz
"""

recipients = (
    {"name": u"Béla",   "mail": "bela@email.com"},
    {"name": u"Aladár", "mail": "aladar@email.com"})

def main():
    u = os.environ.get('U')
    p = os.environ.get('P')

    ssl_context = ssl.create_default_context()
    service = smtplib.SMTP_SSL('smtp.gmail.com', 465, context=ssl_context)
    service.login(u, p)

    print(f"Sending as {u}")
    for r in recipients:
        print(f"Mailing {r['name']}")
        msg = EmailMessage()
        msg['From'] = u
        msg['Subject'] = 'roundmail'
        msg['To'] = r['mail']
        msg.set_content(mailtxt.format(r['name']))
        service.send_message(msg)
    service.quit()
    

if __name__ == '__main__':
    main()

on my system /bin/env python is py3, you may need to add python3 there on some older Debian/Ubuntu distros