zammad/app/views/messaging/ticket_escalation/en.md.erb

# #{ticket.title}
_<#{config.http_type}://#{config.fqdn}/#ticket/zoom/#{ticket.id}|Ticket##{ticket.number}>: Escalated at #{ticket.escalation_at}_
The ticket (#{ticket.title}) from "#{ticket.customer.longname}" has been escalated since "#{ticket.escalation_at}"!

<% if @objects[:article] %>
#{article.body_as_text}
<% end %>