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Receiving Mail in Google App Engine

I am reading the tutorial about Receiving Mail. I updated the app.yaml file as instructed:

application: hello-1-world
version: 1
runtime: python
api_version: 1

handlers:
- url: /favicon.ico
  static_files: static/images/favicon.ico
  upload: static/images/favicon.ico

- url: /_ah/mail/.+
  script: handle_incoming_email.py 
  login: admin

- url: /.*
  script: hw.py

inbound_services:
- mail

And created a handle_incoming_email.py

import cgi
import os
import logging
from google.appengine.api import users
from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app
from google.appengine.ext import db
from google.appengine.api import mail
from google.appengine.ext.webapp.mail_handlers import InboundMailHandler

class ReceiveEmail(InboundMailHandler):
    def receive(self,message):
        logging.info("Received email from %s" % message.sender)
        plaintext = message.bodies(content_type='text/plain')
        for text in plaintext:
            txtmsg = ""
            txtmsg = text[1].decode()
            logging.info("Body is %s" % txtmsg)
            self.response.out.write(txtmsg)

application = webapp.WSGIApplication([
  ReceiveEmail.mapping()
], debug=True)

def main():
    run_wsgi_app(application)
if __name__ == "__main__":
    main()

I also have hw.py that I used to practice sending email. That one works.

Now I go to http://localhost:8081/_ah/admin/inboundmail and send an email to [email protected]

Can anyone explain to me how I process this email? How do I access the content of the email? I have the code

self.response.out.write(txtmsg)

in handle_incoming_email.py but that does not print anything.

I would greatly appreciate if someone clarify how receiving email works.

For instance, in this question

class MailHandler (InboundMailHandler):
  def receive(self, message):
    sender = message.sender
    user_account = db.GqlQuery("SELECT * FROM Task WHERE user = :1", sender).fetch(5)

as far as I understand sender is the email of the sender. So, in my case, how do I access the sender email address.

Also, why do I need to have a separate script to handle incoming mail? Why can't I put the ReceiveEmail handler in my hw.py script? If I do that, where do I put the line

application = webapp.WSGIApplication([
  ReceiveEmail.mapping()
], debug=True)

I would be grateful if you can help me with these questions.

(I asked the same question in GAE group but there were no answers.)

like image 910
Zeynel Avatar asked Nov 14 '22 05:11

Zeynel


1 Answers

Is [email protected] a valid google user? GAE can receive/send mails only from the google user of your application. Your code seems correct.

"Also, why do I need to have a separate script to handle incoming mail? Why can't I put the ReceiveEmail handler in my hw.py" -> the main script is to handle url request, I think is much clearer in this way.

like image 110
Uberto Avatar answered Dec 22 '22 20:12

Uberto