How to use GMail’s SMTP Server with Merb

I switched our email service provider to Google last week. So I have to figure out how to send out emails with GMail. I started with the default Net::SMTP settings, but it failed miserable:

    ~ 530 5.7.0 Must issue a STARTTLS command first. 7sm1765038qwf.45

After playing a while and googled a bit, here is the solution:

1. In your dependencies.rb, add following line:
    dependency "tlsmail"
2. Install the gem
    bin/thor merb:gem:install
3. Modify your init.rb
   

	Merb::BootLoader.after_app_loads do
	# for the mailer - gmail
	Merb::Mailer.config = {
	:host => 'smtp.gmail.com',
	:port => '587',
	:user => 'your_name@your_domain',
	:pass => 'your_pass',
	:auth => :plain, # :plain, ;login, :cram_md5
	:domain => "your_domain"
	}
	end

view raw gmail_mailer_conf.rb hosted with ❤ by GitHub

4. Over write the mailer
   

	class Mailer
	# Sends the mail using SMTP.
	def net_smtp
	Net::SMTP.enable_tls(OpenSSL::SSL::VERIFY_NONE)
	Net::SMTP.start(config[:host], config[:port].to_i, config[:domain],
	config[:user], config[:pass], config[:auth]) { |smtp|
	smtp.send_message.....
	}
	end
	end

view raw mailer.rb hosted with ❤ by GitHub

    Note: the "Net::SMTP.enable_tls(OpenSSL::SSL::VERIFY_NONE)"
5. Sending email
   

	def send_email()
	begin
	mailer = Merb::Mailer.new(
	:from => 'your from',
	# hack: Net::SMTP.send_message does not send msg to cc
	:to => 'your_to list',
	:subject => 'your subject',
	:text => 'content')
	mailer.deliver!
	rescue => exception
	Merb.logger.error(exception)
	end
	end

view raw send_email.rb hosted with ❤ by GitHub

    Note: use :text instead of :body

Now, you are good to go.