613 Asynchronous email delivery As suggested at http://www.datanoise.com/articles/2006/7/14/asynchronous-email-delivery , the email delivery delay experienced by users can be almost eliminated creating a new Thread to handle the delivery. This code at the public part of Mailer.rb model is the most simplistic way to achieve it : @alias_method :old_deliver, :deliver! unless method_defined?(:old_deliver) def deliver!() Thread.start(mail) do |email| old_deliver end end@ 2008-02-06 0 Wed Feb 06 12:44:53 +0100 2008 Sat Mar 07 17:45:40 +0100 2009 Added in r2339. Use :async_smtp instead of :smtp to enable asynchronous email delivery.