send_mail.rb

#!/usr/bin/ruby
require 'net/smtp'

def send_mail(options = {})
  begin
    puts "Assembling mail..."
    options = {
      :smtp_server => '555.55.55.555',
      :from => '[email protected]',
      :to => '[email protected]',
      :subject => 'Ruby Test Mail',
      :message => 'Just Testing!'
    }.merge options

    to = options[:to]
    to = to.collect{|a| a + ", "}.to_s.chop.chop if to.instance_of?( Array )

    msg = "From: #{options[:from]}\n" <<
          "To: #{to}\n" <<
          "Subject: #{options[:subject]}\n" <<
          "\n" <<
          options[:message]
    
    Net::SMTP.start(options[:smtp_server]) do |smtp|
      smtp.send_message msg, options[:from], options[:to]
    end
    puts "...Finished delivering mail."
  rescue Exception => e
    puts "...#{e.message}"
  end
end

message = <<-end
This is a a ruby script testing multiple recepients on an email.
Please reply when you get this and then delete.

-Ed
end

send_mail( {:message => message, :to => ['[email protected]', '[email protected]', '[email protected]'] })