Background Notifications. Thanks @sunkencity!

lib/exception_notifier/notifier.rb

@@ -66,6 +66,23 @@ def exception_notification(env, exception)
       end
     end
 
+    def background_exception_notification(exception)
+
+      if @notifier     = Rails.application.config.middleware.detect { |x| x.klass == ExceptionNotifier }
+        @options  = (@notifier.args.first || {}).reverse_merge(self.class.default_options)
+        subject   = "#{@options[:email_prefix]} (#{exception.class}) #{exception.message.inspect}"
+
+        @exception = exception
+        @backtrace  = exception.backtrace || []
+        @sections   = %w{backtrace}
+
+        mail(:to => @options[:exception_recipients], :from => @options[:sender_address], :subject => subject) do |format|
+          format.text { render "#{mailer_name}/background_exception_notification" }
+        end.deliver
+      end
+    end
+
+
     private
 
     def clean_backtrace(exception)

lib/exception_notifier/views/exception_notifier/background_exception_notification.text.erb

@@ -0,0 +1,13 @@
+A <%= @exception.class %> occurred in background:
+
+  <%= @exception.message %>
+  <%= @backtrace.first %>
+
+  <%  sections = @sections.map do |section|
+        summary = render(section).strip
+        unless summary.blank?
+          title = render("title", :title => section).strip
+          "#{title}\n\n#{summary.gsub(/^/, "  ")}\n\n"
+        end
+      end %>
+  <%= raw sections.join %>