Mail Messaging

Introduction to the Mail Interface

Cement defines a Mail Interface, as well as the default DummyMailHandler that implements the interface as a placeholder but does not actually send any mail.

Cement often includes multiple handler implementations of an interface that may or may not have additional features or functionality than the interface requires. The documentation below only references usage based on the interface and default handler (not the full capabilities of an implementation).

Cement Extensions that Provide Mail Handlers:

• Dummy (default)

• SMTP

API References:

• Cement Core Mail Module

Configuration

Application Meta Options

The following options under App.Meta modify configuration handling:

Option	Description
mail_handler	The handler that implements the mail interface.

Working with Mail Messages

Example: Working with Mail Messages

from cement import App

with App('myapp') as app:
    app.run()

    # send a message using the defined mail handler
    app.mail.send("Test mail message",
                  subject='My Subject',
                  to=['[e-mail]'],
                  from_addr='noreply@localhost',
                  )

cli

python myapp.py

=============================================================================
DUMMY MAIL MESSAGE
-----------------------------------------------------------------------------

To: [e-mail]
From: noreply@localhost
CC:
BCC:
Subject: My Subject

---

Test mail message

-----------------------------------------------------------------------------

The default dummy mail handler simply prints the message to console, and does not send anything. You can override the mail handler via App.Meta.mail_handler, for example using the SMTP Extension.

Creating a Mail Handler

All interfaces in Cement can be overridden with your own implementation. This can be done either by sub-classing MailHandler itself, or by sub-classing an existing extension's handlers in order to alter their functionality.

Example: Creating a Mail Handler

myapp.py

from cement import App
from cement.core.mail import MailHandler

class MyMailHandler(MailHandler):
    class Meta:
        label = 'my_mail_handler'

    # do something to implement the interface

class MyApp(App):
    class Meta:
        label = 'myapp'
        mail_handler = 'my_mail_handler'
        handlers = [
            MyMailHandler,
        ]