app/views/person_notifier/mailer/_default_activity.html.erb
<tr>
<td style="width: 11%">
<%= link_to(profile_image(activity.user, :minor), activity.user.url) %>
</td>
<td>
<p>
<span style="font-size: 14px;">
<%= link_to activity.user.name, activity.user.url %>
<%= describe(activity).html_safe %>
</span>
<span style="font-size: 10px; color: #929292; float: right;"><%= time_ago_in_words(activity.created_at) %></span>
</p>
</td>
</tr>
<tr>
<td></td>
<td>
<%= render :partial => 'profile_comments', :locals => { :activity => activity } %>
</td>
</tr>