Envelopes in Flask example

The following code is an example of using Envelopes in Flask apps.

NOTE: Due to Flask’s threaded nature it’s important to wrap envelopes.conn.SMTP object in connection stack.

from envelopes import Envelope, SMTP
import envelopes.connstack
from flask import Flask, jsonify
import os


app = Flask(__name__)
app.config['DEBUG'] = True

conn = SMTP('127.0.0.1', 1025)


@app.before_request
def app_before_request():
    envelopes.connstack.push_connection(conn)


@app.after_request
def app_after_request(response):
    envelopes.connstack.pop_connection()
    return response


@app.route('/mail', methods=['POST'])
def post_mail():
    envelope = Envelope(
        from_addr='%s@localhost' % os.getlogin(),
        to_addr='%s@localhost' % os.getlogin(),
        subject='Envelopes in Flask demo',
        text_body="I'm a helicopter!"
    )

    smtp = envelopes.connstack.get_current_connection()
    smtp.send(envelope)

    return jsonify(dict(status='ok'))

if __name__ == '__main__':
    app.run()