python_examples/email_example.py

# Import smtplib for the actual sending function
import smtplib

# Import the email modules we'll need
from email.message import EmailMessage

textfile = "textfile"
# Open the plain text file whose name is in textfile for reading.
with open(textfile) as fp:
    # Create a text/plain message
    msg = EmailMessage()
    msg.set_content(fp.read())

# me == the sender's email address
# you == the recipient's email address
msg["Subject"] = f"The contents of {textfile}"
msg["From"] = "roland@rtj.dev"
msg["To"] = "roland@rtj.dev"

# Send the message via our own SMTP server.
s = smtplib.SMTP("localhost")
s.send_message(msg)
s.quit()