app/views/recent_activities_mailer/email.html.erb
<h1>Recently recorded activities</h1>
<br/>
<p>The following is a list of all activities by schools in the last 7 days (since <%= nice_dates(1.week.ago) %>).</p>
<br/>
<%= render 'shared/activities', activities: @activities %>
<br/>
<br/>
<h1>Recently recorded interventions</h1>
<br/>
<p>The following is a list of all energy saving actions recorded by school in the last 7 days (since <%= nice_dates(1.week.ago) %>).</p>
<br/>
<%= render 'shared/observations', observations: @observations %>