`script/generate mailer Notifier` will now create a mailer at app/mailers.

railties/lib/generators/rails/mailer/USAGE

@@ -9,7 +9,7 @@ Example:
     `./script/generate mailer Notifications signup forgot_password invoice`
 
     creates a Notifications mailer class, views, test, and fixtures:
-        Mailer:     app/models/notifications.rb
+        Mailer:     app/mailers/notifications.rb
         Views:      app/views/notifications/signup.erb [...]
-        Test:       test/unit/test/unit/notifications_test.rb
+        Test:       test/functional/notifications_test.rb
         Fixtures:   test/fixtures/notifications/signup [...]

railties/lib/generators/rails/mailer/mailer_generator.rb

@@ -5,7 +5,7 @@ class MailerGenerator < NamedBase
       check_class_collision
 
       def create_mailer_file
-        template "mailer.rb", File.join('app/models', class_path, "#{file_name}.rb")
+        template "mailer.rb", File.join('app/mailers', class_path, "#{file_name}.rb")
       end
 
       hook_for :template_engine, :test_framework

railties/lib/generators/test_unit/mailer/mailer_generator.rb

@@ -7,7 +7,7 @@ class MailerGenerator < Base
       check_class_collision :suffix => "Test"
 
       def create_test_files
-        template "unit_test.rb", File.join('test/unit', class_path, "#{file_name}_test.rb")
+        template "functional_test.rb", File.join('test/functional', class_path, "#{file_name}_test.rb")
       end
 
       def create_fixtures_files

railties/test/generators/mailer_generator_test.rb

@@ -7,7 +7,7 @@ class MailerGeneratorTest < Rails::Generators::TestCase
 
   def test_mailer_skeleton_is_created
     run_generator
-    assert_file "app/models/notifier.rb", /class Notifier < ActionMailer::Base/
+    assert_file "app/mailers/notifier.rb", /class Notifier < ActionMailer::Base/
   end
 
   def test_check_class_collision
@@ -17,7 +17,7 @@ def test_check_class_collision
 
   def test_invokes_default_test_framework
     run_generator
-    assert_file "test/unit/notifier_test.rb", /class NotifierTest < ActionMailer::TestCase/
+    assert_file "test/functional/notifier_test.rb", /class NotifierTest < ActionMailer::TestCase/
     assert_file "test/fixtures/notifier/foo", /app\/views\/notifier\/foo/
     assert_file "test/fixtures/notifier/bar", /app\/views\/notifier\/bar/
   end
@@ -40,7 +40,7 @@ def test_logs_if_the_template_engine_cannot_be_found
 
   def test_actions_are_turned_into_methods
     run_generator
-    assert_file "app/models/notifier.rb", /def foo/
-    assert_file "app/models/notifier.rb", /def bar/
+    assert_file "app/mailers/notifier.rb", /def foo/
+    assert_file "app/mailers/notifier.rb", /def bar/
   end
 end