diff --git a/app/templates/views/edit-letter-template.html b/app/templates/views/edit-letter-template.html
index 5e05d9c01..04cf29829 100644
--- a/app/templates/views/edit-letter-template.html
+++ b/app/templates/views/edit-letter-template.html
@@ -32,6 +32,7 @@
         <aside class="govuk-grid-column-three-quarters">
           {% include "partials/templates/guidance-formatting-letters.html" %}
           {% include "partials/templates/guidance-personalisation.html" %}
+          {% include "partials/templates/guidance-optional-content.html" %}
         </aside>
       </div>
     {% endcall %}
diff --git a/app/templates/views/guidance/edit-and-format-messages.html b/app/templates/views/guidance/edit-and-format-messages.html
index 44c8d0f3d..f6d29db8d 100644
--- a/app/templates/views/guidance/edit-and-format-messages.html
+++ b/app/templates/views/guidance/edit-and-format-messages.html
@@ -78,7 +78,7 @@
 
   <h2 class="heading-medium" id="optional-content">Add optional content</h2>
 
-  <p class="govuk-body">To add optional content to your emails and text messages:</p>
+  <p class="govuk-body">To add optional content to your messages:</p>
 
   <ol class="list list-number">
     <li>Go to the {{ service_link(current_service, 'main.choose_template', 'templates') }} page.</li>
@@ -96,6 +96,4 @@
 
   <p class="govuk-body">If you upload a list, the column names need to match the optional content in your template.</p>
 
-  <p class="govuk-body">You cannot add optional content to a letter.</p>
-
 {% endblock %}