app/views/layouts/user_mailer.html.erb
<!DOCTYPE html>
<html>
<head>
<meta content='text/html; charset=UTF-8' http-equiv='Content-Type' />
</head>
<body>
<% if @user.present?%>
<b>Dear <%=@user.name%>,</b>
<% else %>
<b>Dear openSNP-user,</b>
<%end%>
<%= yield %>
<p>
Cheers,<br/>
the openSNP team
</p>
<p>
--
<br/>
<%if @optout.present?%>
<%if @optout == "newsletter"%>
You're receiving this email as your openSNP-settings say that you're okay with getting some emails from the openSNP-team.
<a href="https://opensnp.org/users/<%=@user.id%>/edit#notifications">You can change this setting really easily on the website</a></br></br>
<%else%>
You received this email because you enabled the notifications for website updates. <a href="https://opensnp.org/users/<%=@user.id%>/edit#notifications">You can easily change these on the website</a>.</br></br>
<%end%>
<%end%>
openSNP thanks <a href="https://www.patreon.com/openSNP">our Patreons</a> for supporting our
hosting costs. Join them or <a href="https://dnageeks.com/search?q=opensnp&aff=6">buy a shirt/mug</a> to support us with our hosting costs.
</p>
</body>
</html>