ref: master
plugins/exchange/views/exchange_plugin/mailer/start_exchange_notification.html.erb
<%= _('You have a new %{exchange} waiting for you! %{origin} wants to exchange.') % {
:origin => @origin.name,
:exchange => link_to(_('exchange'), :controller => 'exchange_plugin_myprofile', :profile => @target.identifier, :action => 'index'),
} %>