One or multiple email attachments can be equal to up to 10MB in size.
If an email attachment exceeds this size it can be hosted elsewhere & added as a URL link.
Updated
<% if (previousArticle) { %>
<% } %>
<% if (allItems.length > 1) { %>
<% if (previousTitle) { %>
<% } %>
<% if (nextArticle) { %>
<%= previousTitle %>
<% } %> <%= previousArticle.title %>
<% if (nextTitle) { %>
<% } %>