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Rubyforge Project: http://rubyforge.org/projects/rctools

Documentation: http://dev.robotcoop.com/Tools/ar_mailer

About

Even deliviring email to the local machine may take too long when you have to send hundreds of messages. ar_mailer allows you to store messages into the database for later delivery by a separate process, ar_sendmail.

Installing ar_mailer

Just install the gem:

$ sudo gem install ar_mailer

Converting to ar_mailer

Go to your Rails project:

$ cd your_rails_project

$ ar_sendmail --create-migration

$ ar_sendmail --create-model

--- app/model/emailer.rb.orig   2006-08-10 13:16:33.000000000 -0700
+++ app/model/emailer.rb        2006-08-10 13:16:43.000000000 -0700
@@ -1,4 +1,4 @@
-class Emailer < ActionMailer::Base
+class Emailer < ActionMailer::ARMailer

def comment_notification(comment)
  from comment.author.email

$ grep delivery_method config/environments/production.rb
ActionMailer::Base.delivery_method = :activerecord

$ ar_sendmail