diff --git a/spec/mailers/previews/devise/mailer_preview.rb b/spec/mailers/previews/devise/mailer_preview.rb
new file mode 100644
index 000000000..2557a6541
--- /dev/null
+++ b/spec/mailers/previews/devise/mailer_preview.rb
@@ -0,0 +1,24 @@
+# Preview all emails at http://localhost:3000/rails/mailers/devise/mailer
+module Devise
+  class MailerPreview < ActionMailer::Preview
+    def confirmation_instructions
+      Devise::Mailer.confirmation_instructions(User.last, "faketoken")
+    end
+
+    def email_changed
+      Devise::Mailer.email_changed(User.last)
+    end
+
+    def password_change
+      Devise::Mailer.password_change(User.last)
+    end
+
+    def reset_password_instructions
+      Devise::Mailer.reset_password_instructions(User.last, "faketoken")
+    end
+
+    def unlock_instructions
+      Devise::Mailer.unlock_instructions(User.last, "faketoken")
+    end
+  end
+end
diff --git a/spec/mailers/previews/devise_invitable/mailer_preview.rb b/spec/mailers/previews/devise_invitable/mailer_preview.rb
new file mode 100644
index 000000000..07d966019
--- /dev/null
+++ b/spec/mailers/previews/devise_invitable/mailer_preview.rb
@@ -0,0 +1,8 @@
+# Preview all emails at http://localhost:3000/rails/mailers/devise/mailer
+module DeviseInvitable
+  class MailerPreview < ActionMailer::Preview
+    def invitation_instructions
+      Devise::Mailer.invitation_instructions(User.last, "faketoken")
+    end
+  end
+end