utils.py

import smtplib
import os
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart


def send_email(to_address, subject, html_body):
    smtp_server = os.environ.get("SMTP_SERVER")
    smtp_port = int(os.environ.get("SMTP_PORT"))
    smtp_username = os.environ.get("SMTP_USERNAME")
    smtp_password = os.environ.get("SMTP_PASSWORD")
    from_address = os.environ.get("SMTP_USERNAME")

    message = MIMEMultipart("alternative")
    message["Subject"] = subject
    message["From"] = from_address
    message["To"] = to_address

    text_part = MIMEText("Please view this email in an HTML compatible client.", "plain")
    html_part = MIMEText(html_body, "html")
    message.attach(text_part)
    message.attach(html_part)
    with smtplib.SMTP_SSL(smtp_server, smtp_port, timeout=5) as server:
        server.login(smtp_username, smtp_password)
        server.sendmail(from_address, to_address, message.as_string())