cloudron-box/src/mail_templates/user_added.ejs

<%if (format === 'text') { %>

Dear <%= cloudronName %> Admin,

A new user with email <%= user.email %> was added to <%= cloudronName %>.

Powered by https://cloudron.io

<% } else { %>

<center>

<img src="<%= cloudronAvatarUrl %>" width="128px" height="128px"/>

<h3>Dear <%= cloudronName %> Admin,</h3>

<p>
    A new user with email <%= user.email %> was added to <%= cloudronName %>.
</p>

<br/>
<br/>

<div style="font-size: 10px; color: #333333; background: #ffffff;">
    Powered by <a href="https://cloudron.io">Cloudron</a>.
</div>

</center>

<% } %>