The Joy of Flex

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
 <mx:HTTPService id="sm" url="http://localhost:8080/sendmail" useProxy="false"
 	method="POST" resultFormat="e4x">
 	<mx:request xmlns="">
 		<msgFrom>{msgFrom.text}</msgFrom>
 		<msgTo>{msgTo.text}</msgTo>
 		<msgSubject>{msgSubject.text}</msgSubject>
 		<msgBody>{msgBody.text}</msgBody>
 	</mx:request>
 </mx:HTTPService>  

<mx:VBox>

<mx:Label text="Flex Client for Google App Engine" fontSize="15" fontWeight="bold"/>
 	<mx:Form defaultButton="{sendMessage}">
            <mx:Label text="Compose a Mail Message"/>
 		<mx:FormItem label="From">
 			<mx:TextInput id="msgFrom"/>
 		</mx:FormItem>
 		<mx:FormItem label="To">
 			<mx:TextInput id="msgTo"/>
 		</mx:FormItem>
 		<mx:FormItem label="Subject">
 			<mx:TextInput id="msgSubject"/>
 		</mx:FormItem>
 		<mx:FormItem label="Body">
 			<mx:TextArea id="msgBody"/>
 		</mx:FormItem>
 		<mx:FormItem>
 			<mx:Button id="sendMessage" label="Send" click="{sm.send()}"/>
 		</mx:FormItem>
 	</mx:Form>

<mx:Label text="Previously Sent Messages"/>
 	<mx:DataGrid id="dg" dataProvider="{sm.lastResult.message}">
         <mx:columns>
             <mx:DataGridColumn headerText="From" dataField="from"/>
             <mx:DataGridColumn headerText="To" dataField="to"/>
             <mx:DataGridColumn headerText="Date" dataField="date"/>
             <mx:DataGridColumn headerText="Subject" dataField="subject"/>
             <mx:DataGridColumn headerText="Body" dataField="body"/>
         </mx:columns>
     </mx:DataGrid>
 </mx:VBox>

</mx:Application>

#!/usr/bin/env python  

import cgi
import datetime
import wsgiref.handlers

from google.appengine.ext import db
from google.appengine.api import users
from google.appengine.ext import webapp
from google.appengine.api import mail

class MailMessage(db.Model):
  msgTo = db.StringProperty()
  msgSubject = db.StringProperty()
  msgFrom = db.StringProperty()
  msgBody = db.StringProperty(multiline=True)
  msgDate = db.DateTimeProperty(auto_now_add=True)

class MainPage(webapp.RequestHandler):
  def get(self):
   self.response.headers['Content-Type'] = 'text/plain'
   self.response.out.write('\n')

messages = db.GqlQuery("SELECT * "
                            "FROM MailMessage "
                            "ORDER BY msgDate DESC LIMIT 10")

self.response.out.write('\n')

for msg in messages:
     self.response.out.write('  \n')
     self.response.out.write('    %s\n' % msg.msgTo)
     self.response.out.write('    %s\n' % msg.msgSubject)
     self.response.out.write('    %s\n' % msg.msgFrom)
     self.response.out.write('    %s\n' % msg.msgDate)
     self.response.out.write('    %s\n' % cgi.escape(msg.msgBody))
     self.response.out.write('  \n')

self.response.out.write('\n')

class Sendmail(webapp.RequestHandler):
  def post(self):
    msg = MailMessage()
    msg.msgFrom = self.request.get('msgFrom')
    msg.msgTo = self.request.get('msgTo')
    msg.msgSubject = self.request.get('msgSubject')
    msg.msgBody = self.request.get('msgBody')
    mail.send_mail(sender=msg.msgFrom, to=msg.msgTo, subject=msg.msgSubject, body=msg.msgBody)
    msg.put()
    self.redirect('/')

application = webapp.WSGIApplication([
  ('/', MainPage),
  ('/sendmail', Sendmail)
], debug=True)

def main():
  wsgiref.handlers.CGIHandler().run(application)

if __name__ == '__main__':
  main()