views/cap_mailer/_section_custom.text.erb
<%= section_title.titleize unless section_title.nil? -%>
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<% if data.is_a?(Array) then data = data[0] end -%>
<% data.each do |key, value| -%>
<% if !key.nil? && !value.nil? -%>
<%= key %> <%= value.is_a?(Array) ? value.to_sentence : value.is_a?(String) ? value : value.inspect%>
<% end -%>
<% end unless data.nil?-%>