Flask-Mail

扩展第三方邮件服务, 通过SMTP服务来发送邮件

pip install flask-mail

from flask_mail import Mail
app = Flask(__name__)
...
mail = Mail(app)

配置变量

STARTTLS 是另一种加密方式，会对不安全的连接进行升级(使用SSL或者TLS)，

MAIL_USE_TLS = True
MAIL_PORT = 587

SSL/TLS加密

MAIL_USE_SSL = True
MAIL_PORT = 465

常用邮件服务

163 SMTP不支持STARTTLS，需要使用SSL/TLS

对于需要发送大量事务性邮件，使用自己配置的SMTP或者Send Grid， Mailgun等

服务配置

import os 
from flask import Flask
from flask_mail import Mail 
app = Flask(__name__)
app.config.update(
        ...
        MAIL_SERVER = os.getenv('MAIL_SERVER')
        MAIL_PORT = 587
        MAIL_USE_TLS = True
        MAIL_USERNAME = os.getenv('MAIL_USERNAME')
        MAIL_PASSWORD = os.getenv('MAIL_PASSWORD')
        MAIL_DEFAULT_SENDER = ('Rick Xu', os.getenv('MAIL_USERNAME'))
)

mail = Mail(app)

发信

from flask_mail import Mail, Message 
...
mail = Mail(app)
...
def send_mail(subject, to, body):
        message = Message(subject, recipients=[to], body=body)
        mail.send(message)

@app.route('/subscribe', methods=["GET", "POST"])
def subscribe():
        form = SubscribeForm()
        if form.validate_on_submit():
                email = form.email.data
                flash('Welcome you')
                send_email("Subscribe Success!", email, 'Hello, thanks for subscribing')
                return redirect(url_for('index'))
        return render_template('index.html', form=form)