Send multiple mails in one deliver command?

Question

I try to send multiple mails in one single .deliver command. My mailer method looks like this:

def feedback_mail
    @verteiler = ["[email protected]", "[email protected]"]
    for v in @verteiler.sort
      mail(:to => v, :subject => "Foo Bar")
    end
end

The problem is, only one mail gets send, to the last entry of the array. any advice here?

Answer 1

This idea won't scale much - you'd need to implement something like Resque and workers to process sending all the emails out.

Yes, @socjopata's idea is good, but you'll really want to iterate adding them to the job queue and spawn a couple workers to process them. As per the guides, this is how to do it:

class AdminMailer < ActionMailer::Base
  default :to => ["[email protected]", "[email protected]"],
          :from => "[email protected]"

  def new_registration(user)
    @user = user
    mail(:subject => "New User Signup: #{@user.email}")
  end
end

I'd essentially hand of YourMailer.feedback_mail(<PASS ARGS HERE>).deliver to Resque-

Resque.enqueue(SendMail, <ARGS>)  # replace this in your controller

The worker would look like

#send_mail.rb
class SendMail
  @queue = :feedback_mail_queue
  def self.perform(<ARGS>) # pass these in enqueue call
    YourMailer.feedback_mail(<PASS ARGS HERE>).deliver
  end
end

As per section 2.3.4 of the Rails Guides:

It is possible to send email to one or more recipients in one email (for e.g. informing all admins of a new signup) by setting the list of emails to the :to key. The list of emails can be an array of email addresses or a single string with the addresses separated by commas.

Looking back at your attempt, FYI - this should work

def feedback_mail
    @verteiler = ["[email protected]", "[email protected]"]
    mail(:to => @verteiler, :subject => "Foo Bar")
end