Flask Mail

Sending Email with Flask-Mail

pip install flask-mail

from flask_mail import Mail, Message

mail = Mail()
app.config.update(
    MAIL_SERVER   = "smtp.gmail.com",
    MAIL_PORT     = 587,
    MAIL_USE_TLS  = True,
    MAIL_USERNAME = os.environ["MAIL_USERNAME"],
    MAIL_PASSWORD = os.environ["MAIL_PASSWORD"],
)
mail.init_app(app)

def send_welcome_email(user):
    msg = Message(
        subject    = "Welcome!",
        sender     = "noreply@myapp.com",
        recipients = [user.email],
    )
    msg.body = "Hi " + user.name + ", welcome to MyApp!"
    msg.html = render_template("emails/welcome.html", user=user)
    mail.send(msg)

# Async with threading
from threading import Thread

def send_async(app, msg):
    with app.app_context():
        mail.send(msg)

Thread(target=send_async, args=(app, msg)).start()