email.rb

#! /usr/bin/env ruby

require 'pony'

def send_email(to, from, subject, message, attachment=nil)
  begin
    content = open(attachment, 'rb') { |io| io.read }
    basename = File.basename(attachment)
    puts basename
    mail = Pony.mail(
      :via  => :smtp,
      :via_options => {
        :address              => 'smtp.gmail.com',
        :port                 => '587',
        :enable_starttls_auto => true,
        :user_name            => '[email protected]',
        :password             => 'password',
        :authentication       => :plain,
        :domain               => 'unknown.com'
      },
      :to        => to,
      :from      => from,
      :subject   => subject,
      :body      => message,
      :attachments => {
        basename => content
      },
      :headers => {
        'Content-Type' => 'multipart/mixed',
        'Content-Transfer-Encoding' => 'base64',
        'Content-Disposition' => 'attachment'
      }
    )
  rescue Exception => ex
    puts "Error posting email: #{ex.message}"
    return ex.message
  end
  nil
end

def main
  file = 'tmp.dump'
  send_email(
    '[email protected]',
    '[email protected]',
    'See attachment',
    'This is a file',
    file
  )
end

main if __FILE__ == $0