How to send SMTP emails in background

Rails
1

My application sends emails with SMTP but I have a problem: It is very
slow, so every time my application sends an email it goes very slow.

I wonder if there is any kind of mode to do all the SMTP in background.
I mean, I would like to continue sending SMTP emails but I would like my
app not to go slow every time it sends an email. The app should do all
the business about sending the email in background.

2

you’ve got at least two choices:

  1. send your mail in a background process using backgroundrb
    (http://backgroundrb.rubyforge.org/)
  2. use ar_mailer
    (http://blog.segment7.net/articles/2006/08/15/ar_mailer)

backgroundrb requires you to run a separate backgroundrb process,
ar_mailer requires you to set up another database table for queueing
the mail, and then running a cron job at a specified interval to send
all the queued mail

Mike

3

Another choice is to use the Ruby Thread. You can read up on it here

http://www.rubycentral.com/pickaxe/ref_c_thread.html

I’ve had great success using it with all my background processing tasks.
I just haven’t found a
situation where I needed backgroundrb, yet.

– Long
http://FATdrive.tv/wall/trakb/10-Long
http://FATdrive.tv/ - store, play, share

----- Original Message -----
From: “Mike G.” [email protected]
To: [email protected]
Sent: Friday, March 14, 2008 2:31 PM
Subject: [Rails] Re: How to send SMTP emails in background

4

In my case i used the Thread method.
In this example i use msmtp, and send my email via GMail.

In environment.rb

ActionMailer::Base.delivery_method = :msmtp

module ActionMailer
class Base
def perform_delivery_msmtp(mail)
thread = Thread.new do
IO.popen("/usr/bin/msmtp -t -C /etc/.msmtprc -a gmail --",
“w”) do
|sm|
sm.puts(mail.encoded.gsub(/\r/, ‘’))
sm.flush
end
end
thread.run
end
end
end