ActioMailer SMTP settings for Gmail

Write the code in config/enviornment.rb or config/application.rb

        config.action_mailer.raise_delivery_errors = true

        config.action_mailer.delivery_method = :smtp

Write after  the config end

      ActionMailer::Base.smtp_settings = {

        :enable_starttls_auto => true,

        :address => "smtp.gmail.com",

        :port => "587",

        :authentication => :login,

        :user_name => "*****",

        :password => "*****"

     }