<%= simple_form_for(dmail) do |f| %>
  <%= f.input :to_name, :label => "To" %>
  <%= f.input :title, :as => :string %>
  <%= dtext_field "dmail", "body" %>
  <%= f.button :submit, "Send" %>
  <%= dtext_preview_button "dmail", "body" %>
<% end %>
