app/views/users/send_mail.html.erb
<h1><%= _('Send e-mail to users') %></h1>
<%= error_messages_for :mailing %>
<%= form_for :mailing do |f| %>
<div class="recipients">
<%= label_tag(_("Recipients: "), nil, { class: "formlabel" }) %>
<%= labelled_radio_button(_('All Users'), :send_to, "all", true, { id: "send_to_all" }) %></br>
<%= labelled_radio_button(_('Only Admins'), :send_to, "admins" , false, { id: "send_to_admins" }) %><br>
<div class="recipients-checkboxes">
<%= labelled_check_box(_('Environment Admins'), 'recipients[env_admins]', true, false, { disabled: true, id: "env_admins" }) %>
<%= labelled_check_box(_('Profile Admins'), 'recipients[profile_admins]', true, false, { disabled: true, id: "profile_admins" }) %>
</div>
</div>
<%= labelled_form_field(_('Subject:'), f.text_field(:subject)) %>
<%= labelled_form_field(_('Body:'), f.text_area(:body, :class => current_editor)) %>
<%= button_bar do %>
<%= submit_button(:email, _('Send'), :cancel => { :controller => 'users' }) %>
<% end %>
<% end %>
<%= javascript_include_tag "send_email.js" %>