Setup ActionMailer

Related: YAML Mail Config?

We will use GMail as our SMTP server to setup ActionMailer. This instruction is based on the following pages:

• Ruby Inside: How to use GMail's SMTP Server with Rails
• [[http://www.stephenchu.com/2006/06/how-to-use-gmail-smtp-server-to-send.html | Stephen Chu: How to use GMail SMTP server to send emails in Rails ActionMailer
• How to send ActionMailer mails to Gmail.com - This is the original post that describes sending mail using GMail, but the page doesn't exist anymore.

ActionMailer can't send emails using GMail out of the box. To add this functionality:

1. Create the file lib/smtp_tls.rb
   

   require "openssl"
   require "net/smtp"
   
   # http://blog.pomozov.info/posts/how-to-send-actionmailer-mails-to-gmailcom.html
   
   Net::SMTP.class_eval do
     private
     def do_start(helodomain, user, secret, authtype)
       raise IOError, 'SMTP session already started' if @started
       check_auth_args user, secret, authtype if user or secret
   
       sock = timeout(@open_timeout) { TCPSocket.open(@address, @port) }
       @socket = Net::InternetMessageIO.new(sock)
       @socket.read_timeout = 60 #@read_timeout
   
       check_response(critical { recv_response() })
       do_helo(helodomain)
   
       raise 'openssl library not installed' unless defined?(OpenSSL)
       starttls
       ssl = OpenSSL::SSL::SSLSocket.new(sock)
       ssl.sync_close = true
       ssl.connect
       @socket = Net::InternetMessageIO.new(ssl)
       @socket.read_timeout = 60 #@read_timeout
       do_helo(helodomain)
   
       authenticate user, secret, authtype if user
       @started = true
     ensure
       unless @started
         # authentication failed, cancel connection.
         @socket.close if not @started and @socket and not @socket.closed?
         @socket = nil
       end
     end
   
     def do_helo(helodomain)
        begin
         if @esmtp
           ehlo helodomain
         else
           helo helodomain
         end
       rescue Net::ProtocolError
         if @esmtp
           @esmtp = false
           @error_occured = false
           retry
         end
         raise
       end
     end
   
     def starttls
       getok('STARTTLS')
     end
   
     def quit
       begin
         getok('QUIT')
       rescue EOFError
       rescue OpenSSL::SSL::SSLError
       end
     end
   end
   

2. Add the following lines to config/environment.rb and replace the values with the appropriate username and password:
   

   require 'smtp_tls'
   ActionMailer::Base.server_settings = {
     :address => "smtp.gmail.com",
     :port => 587,
     :domain => "mycompany.com",
     :authentication => :plain,
     :user_name => "username",
     :password => "password"
   }
   

3. Edit app/models/user_mailer.rb.
   • Make sure to replace the value of @from within the method setup_email(user) with the GMail address in the ActionMailer settings.