app/views/user_mailer/dump.html.erb
<p>
the data dump (including all the genotyping files and the associated
phenotypes) you requested for download from openSNP are now available in
a zipped format.
<b><a href="<%="http://"+ActionMailer::Base.default_url_options[:host]+@link%>">Go and download them!</a></b>
</p>