diff --git a/app/main/views/jobs.py b/app/main/views/jobs.py
index 94bd5cf19..4258d91be 100644
--- a/app/main/views/jobs.py
+++ b/app/main/views/jobs.py
@@ -169,8 +169,12 @@ def view_notifications(service_id, message_type=None):
         things_you_can_search_by={
             'email': ['email address'],
             'sms': ['phone number'],
-            'letter': [],
-            None: ['email address', 'phone number'],
+            # This should become ‘postal address’ not ‘first line…’ once
+            # we’ve finished populating normalised addresses
+            'letter': ['first line of address', 'file name'],
+            # We say recipient here because combining all 3 types, plus
+            # reference gets too long for the hint text
+            None: ['recipient'],
         }.get(message_type) + {
             True: ['reference'],
             False: [],
diff --git a/app/templates/views/notifications.html b/app/templates/views/notifications.html
index 7c9bbabc0..b675555af 100644
--- a/app/templates/views/notifications.html
+++ b/app/templates/views/notifications.html
@@ -34,42 +34,39 @@
       'counts'
     ) }}
 
-    {% call form_wrapper(
-      action=url_for('.view_notifications', service_id=current_service.id, message_type=message_type),
-      class="govuk-grid-row"
-    ) %}
-      <div class="govuk-grid-column-three-quarters {% if message_type == 'sms' %}extra-tracking{% endif %}">
-        {{ textbox(
-          search_form.to,
-          width='1-1',
-          label=things_you_can_search_by|formatted_list(
-            conjunction='or',
-            before_each='',
-            after_each='',
-            prefix='Search by',
-            prefix_plural='Search by'
-          )
-        ) }}
-      </div>
-      <div class="govuk-grid-column-one-quarter">
-        <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
-        {{ govukButton({
-          "text": "Search",
-          "classes": "search-form__button"
-        }) }}
-      </div>
-    {% endcall %}
-
-    {% call form_wrapper(id="search-form") %}
-      <input type="hidden" name="to" value="{{ search_form.to.data }}">
-      <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
-    {% endcall %}
-  {% else %}
-    {% call form_wrapper(id="search-form") %}
-      <input type="hidden" name="csrf_token" value="{{ csrf_token() }}"/>
-    {% endcall %}
   {% endif %}
 
+  {% call form_wrapper(
+    action=url_for('.view_notifications', service_id=current_service.id, message_type=message_type),
+    class="govuk-grid-row"
+  ) %}
+    <div class="govuk-grid-column-three-quarters {% if message_type == 'sms' %}extra-tracking{% endif %}">
+      {{ textbox(
+        search_form.to,
+        width='1-1',
+        label=things_you_can_search_by|formatted_list(
+          conjunction='or',
+          before_each='',
+          after_each='',
+          prefix='Search by',
+          prefix_plural='Search by'
+        )
+      ) }}
+    </div>
+    <div class="govuk-grid-column-one-quarter">
+      <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
+      {{ govukButton({
+        "text": "Search",
+        "classes": "search-form__button"
+      }) }}
+    </div>
+  {% endcall %}
+
+  {% call form_wrapper(id="search-form") %}
+    <input type="hidden" name="to" value="{{ search_form.to.data }}">
+    <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
+  {% endcall %}
+
   {% if current_user.has_permissions('view_activity') %}
     <p class="bottom-gutter">
       <a href="{{ download_link }}" download="download" class="govuk-link govuk-link--no-visited-state govuk-!-font-weight-bold">Download this report</a>
diff --git a/tests/app/main/views/test_activity.py b/tests/app/main/views/test_activity.py
index 8ed04e75c..75e9f0b13 100644
--- a/tests/app/main/views/test_activity.py
+++ b/tests/app/main/views/test_activity.py
@@ -340,7 +340,7 @@ def test_shows_message_when_no_notifications(
     (
         {},
         {},
-        'Search by email address or phone number',
+        'Search by recipient',
         '',
     ),
     (
@@ -373,6 +373,16 @@ def test_shows_message_when_no_notifications(
         'Search by email address',
         'test@example.com',
     ),
+    (
+        {
+            'message_type': 'letter',
+        },
+        {
+            'to': 'Firstname Lastname',
+        },
+        'Search by first line of address or file name',
+        'Firstname Lastname',
+    ),
 ])
 def test_search_recipient_form(
     client_request,
@@ -413,9 +423,10 @@ def test_search_recipient_form(
 
 
 @pytest.mark.parametrize('message_type, expected_search_box_label', [
-    (None, 'Search by email address, phone number or reference'),
+    (None, 'Search by recipient or reference'),
     ('sms', 'Search by phone number or reference'),
     ('email', 'Search by email address or reference'),
+    ('letter', 'Search by first line of address, file name or reference'),
 ])
 def test_api_users_are_told_they_can_search_by_reference_when_service_has_api_keys(
     client_request,
@@ -437,7 +448,7 @@ def test_api_users_are_told_they_can_search_by_reference_when_service_has_api_ke
 
 
 @pytest.mark.parametrize('message_type, expected_search_box_label', [
-    (None, 'Search by email address or phone number'),
+    (None, 'Search by recipient'),
     ('sms', 'Search by phone number'),
     ('email', 'Search by email address'),
 ])
@@ -615,10 +626,10 @@ def test_redacts_templates_that_should_be_redacted(
     "message_type, tablist_visible, search_bar_visible", [
         ('email', True, True),
         ('sms', True, True),
-        ('letter', False, False)
+        ('letter', False, True)
     ]
 )
-def test_big_numbers_and_search_dont_show_for_letters(
+def test_big_numbers_dont_show_for_letters(
     client_request,
     service_one,
     mock_get_notifications,