app/views/user_mailer/new_organizer_invitation.html.erb
<!DOCTYPE html>
<html>
<head>
<meta content='text/html; charset=UTF-8' http-equiv='Content-Type' />
</head>
<body>
<p>
Hi <%= @user.first_name %>,
</p>
<p>You have been granted access to the <%= link_to((@event.title), event_url(@event)) %> event on CardSwipr.</p>
<p>This will allow you to view the swipe-in page, view the list of attendees, and update the event settings.</p>
<p>You can log in to CardSwipr via the following link: <%= @url %>.</p>
<p>
Thanks!
</p>
</body>
</html>