Send emails via marrow.mailer

I have a web app where authorized users can log in to edit a schedule. In order to remind the users mentioned in the schedule on a weekly base, a mailer running inside of cron is needed. marrow.mailer is a very handy framework to help achieve this goal.

First, I retrieve all the calendar for this week from the database:

now = datetime.now()
nextweek = now + timedelta(days=7)
cal = (
    session.query(model.Calendar)
        .filter(between(model.Calendar.fake_date, now, nextweek))
).first()

Then, setup the mailer via marrow.mailer

# start the mailer daemon. I use postfix as my email agent so here I use
# localhost as host
mailer = Mailer(dict(
    transport = dict(
        use = "smtp",
        host = "localhost"),
    manager = dict()))
mailer.start()

message = Message(author="Foo Bar <foo@bar.org>",
                  to=cal.email,
                  cc=["woot@bar.org",
                      "bar@bar.org"],
                  bcc="zoo@bar.org")
message.subject = subject
message.plain = body
mailer.send(message)

mailer.stop()