diff --git a/app/main/views/uploads.py b/app/main/views/uploads.py
index 28e40b8f6..5acb8a898 100644
--- a/app/main/views/uploads.py
+++ b/app/main/views/uploads.py
@@ -2,6 +2,7 @@ import uuid
 from io import BytesIO
 
 from flask import (
+    abort,
     current_app,
     flash,
     redirect,
@@ -13,7 +14,7 @@ from notifications_utils.pdf import pdf_page_count
 from PyPDF2.utils import PdfReadError
 from requests import RequestException
 
-from app import current_service, service_api_client
+from app import current_service, notification_api_client, service_api_client
 from app.extensions import antivirus_client
 from app.main import main
 from app.main.forms import PDFUploadForm
@@ -115,6 +116,7 @@ def uploaded_letter_preview(service_id, file_id):
         original_filename=original_filename,
         template=template,
         status=status,
+        file_id=file_id,
     )
 
 
@@ -130,3 +132,27 @@ def view_letter_upload_as_preview(service_id, file_id):
         return TemplatePreview.from_invalid_pdf_file(pdf_file, page)
     else:
         return TemplatePreview.from_valid_pdf_file(pdf_file, page)
+
+
+@main.route("/services/<service_id>/upload-letter/send", methods=['POST'])
+@user_has_permissions('send_messages', restrict_admin_usage=True)
+def send_uploaded_letter(service_id):
+    filename = request.form['filename']
+    file_id = request.form['file_id']
+
+    if not (current_service.has_permission('letter') and current_service.has_permission('upload_letters')):
+        abort(403)
+
+    file_location = get_transient_letter_file_location(service_id, file_id)
+    _, metadata = get_letter_pdf_and_metadata(file_location)
+
+    if metadata.get('status') != 'valid':
+        abort(403)
+
+    notification_api_client.send_precompiled_letter(service_id, filename, file_id)
+
+    return redirect(url_for(
+        '.view_notification',
+        service_id=service_id,
+        notification_id=file_id,
+    ))
diff --git a/app/navigation.py b/app/navigation.py
index cbd05f76d..5cc6b833d 100644
--- a/app/navigation.py
+++ b/app/navigation.py
@@ -244,6 +244,7 @@ class HeaderNavigation(Navigation):
         'send_test',
         'send_test_preview',
         'send_test_step',
+        'send_uploaded_letter',
         'service_add_email_reply_to',
         'service_add_letter_contact',
         'service_add_sms_sender',
@@ -556,6 +557,7 @@ class MainNavigation(Navigation):
         'robots',
         'security',
         'send_notification',
+        'send_uploaded_letter',
         'service_dashboard_updates',
         'service_delete_email_reply_to',
         'service_delete_letter_contact',
@@ -792,6 +794,7 @@ class CaseworkNavigation(Navigation):
         'send_messages',
         'send_notification',
         'send_test_preview',
+        'send_uploaded_letter',
         'service_add_email_reply_to',
         'service_add_letter_contact',
         'service_add_sms_sender',
@@ -1074,6 +1077,7 @@ class OrgNavigation(Navigation):
         'send_test',
         'send_test_preview',
         'send_test_step',
+        'send_uploaded_letter',
         'service_add_email_reply_to',
         'service_add_letter_contact',
         'service_add_sms_sender',
diff --git a/app/notify_client/notification_api_client.py b/app/notify_client/notification_api_client.py
index 66b16448a..d474214bc 100644
--- a/app/notify_client/notification_api_client.py
+++ b/app/notify_client/notification_api_client.py
@@ -59,6 +59,14 @@ class NotificationApiClient(NotifyAdminAPIClient):
         data = _attach_current_user(data)
         return self.post(url='/service/{}/send-notification'.format(service_id), data=data)
 
+    def send_precompiled_letter(self, service_id, filename, file_id):
+        data = {
+            'filename': filename,
+            'file_id': file_id,
+        }
+        data = _attach_current_user(data)
+        return self.post(url='/service/{}/send-pdf-letter'.format(service_id), data=data)
+
     def get_notification(self, service_id, notification_id):
         return self.get(url='/service/{}/notifications/{}'.format(service_id, notification_id))
 
diff --git a/app/templates/views/uploads/preview.html b/app/templates/views/uploads/preview.html
index 9001411b0..c8d954887 100644
--- a/app/templates/views/uploads/preview.html
+++ b/app/templates/views/uploads/preview.html
@@ -20,4 +20,18 @@
     <div class="letter-sent">
       {{ template|string }}
     </div>
+
+    {% if status == 'valid' %}
+    <div class="js-stick-at-bottom-when-scrolling">
+      <form method="post" enctype="multipart/form-data" action="{{url_for(
+          'main.send_uploaded_letter',
+          service_id=current_service.id,
+        )}}" class='page-footer'>
+        <input type="hidden" name="csrf_token" value="{{ csrf_token() }}" />
+        <input type="hidden" name="filename" value="{{ original_filename }}" />
+        <input type="hidden" name="file_id" value="{{ file_id }}" />
+        <button type="submit" class="button">Send 1 letter</button>
+      </form>
+    </div>
+  {% endif %}
 {% endblock %}
diff --git a/tests/app/main/views/test_uploads.py b/tests/app/main/views/test_uploads.py
index 609ff116b..6638ef3ef 100644
--- a/tests/app/main/views/test_uploads.py
+++ b/tests/app/main/views/test_uploads.py
@@ -50,6 +50,10 @@ def test_post_upload_letter_redirects_for_valid_file(mocker, client_request):
     assert page.find('h1').text == 'tests/test_pdf_files/one_page_pdf.pdf'
     assert not page.find(id='validation-error-message')
 
+    assert page.find('input', {'type': 'hidden', 'name': 'filename', 'value': 'tests/test_pdf_files/one_page_pdf.pdf'})
+    assert page.find('input', {'type': 'hidden', 'name': 'file_id', 'value': 'fake-uuid'})
+    assert page.find('button', {'type': 'submit'}).text == 'Send 1 letter'
+
 
 def test_post_upload_letter_shows_letter_preview_for_valid_file(mocker, client_request):
     letter_template = {'template_type': 'letter',
@@ -182,6 +186,7 @@ def test_post_upload_letter_with_invalid_file(mocker, client_request):
     assert normalize_spaces(
         page.find(id='validation-error-message').text
     ) == 'Validation failed'
+    assert not page.find('button', {'type': 'submit'})
 
 
 def test_post_upload_letter_shows_letter_preview_for_invalid_file(mocker, client_request):
@@ -254,3 +259,66 @@ def test_uploaded_letter_preview(mocker, client_request):
 
     assert page.find('h1').text == 'my_letter.pdf'
     assert page.find('div', class_='letter-sent')
+
+
+def test_send_uploaded_letter_sends_letter_and_redirects_to_notification_page(mocker, service_one, client_request):
+    mocker.patch('app.main.views.uploads.get_letter_pdf_and_metadata', return_value=('file', {'status': 'valid'}))
+    mock_send = mocker.patch('app.main.views.uploads.notification_api_client.send_precompiled_letter')
+
+    service_one['permissions'] = ['letter', 'upload_letters']
+    file_id = 'abcd-1234'
+
+    client_request.post(
+        'main.send_uploaded_letter',
+        service_id=SERVICE_ONE_ID,
+        _data={'filename': 'my_file.pdf', 'file_id': file_id},
+        _expected_redirect=url_for(
+            'main.view_notification',
+            service_id=SERVICE_ONE_ID,
+            notification_id=file_id,
+            _external=True
+        )
+    )
+    mock_send.assert_called_once_with(SERVICE_ONE_ID, 'my_file.pdf', file_id)
+
+
+@pytest.mark.parametrize('permissions', [
+    ['email'],
+    ['letter'],
+    ['upload_letters'],
+])
+def test_send_uploaded_letter_when_service_does_not_have_correct_permissions(
+    mocker,
+    service_one,
+    client_request,
+    permissions,
+):
+    mocker.patch('app.main.views.uploads.get_letter_pdf_and_metadata', return_value=('file', {'status': 'valid'}))
+    mock_send = mocker.patch('app.main.views.uploads.notification_api_client.send_precompiled_letter')
+
+    service_one['permissions'] = permissions
+    file_id = 'abcd-1234'
+
+    client_request.post(
+        'main.send_uploaded_letter',
+        service_id=SERVICE_ONE_ID,
+        _data={'filename': 'my_file.pdf', 'file_id': file_id},
+        _expected_status=403
+    )
+    assert not mock_send.called
+
+
+def test_send_uploaded_letter_when_metadata_states_pdf_is_invalid(mocker, service_one, client_request):
+    mocker.patch('app.main.views.uploads.get_letter_pdf_and_metadata', return_value=('file', {'status': 'invalid'}))
+    mock_send = mocker.patch('app.main.views.uploads.notification_api_client.send_precompiled_letter')
+
+    service_one['permissions'] = ['letter', 'upload_letters']
+    file_id = 'abcd-1234'
+
+    client_request.post(
+        'main.send_uploaded_letter',
+        service_id=SERVICE_ONE_ID,
+        _data={'filename': 'my_file.pdf', 'file_id': file_id},
+        _expected_status=403
+    )
+    assert not mock_send.called
diff --git a/tests/app/notify_client/test_notification_client.py b/tests/app/notify_client/test_notification_client.py
index ef48dec69..f9a90f702 100644
--- a/tests/app/notify_client/test_notification_client.py
+++ b/tests/app/notify_client/test_notification_client.py
@@ -59,6 +59,23 @@ def test_send_notification(mocker, logged_in_client, active_user_with_permission
     )
 
 
+def test_send_precompiled_letter(mocker, logged_in_client, active_user_with_permissions):
+    mock_post = mocker.patch('app.notify_client.notification_api_client.NotificationApiClient.post')
+    NotificationApiClient().send_precompiled_letter(
+        'abcd-1234',
+        'my_file.pdf',
+        'file-ID'
+    )
+    mock_post.assert_called_once_with(
+        url='/service/abcd-1234/send-pdf-letter',
+        data={
+            'filename': 'my_file.pdf',
+            'file_id': 'file-ID',
+            'created_by': active_user_with_permissions['id']
+        }
+    )
+
+
 def test_get_notification(mocker):
     mock_get = mocker.patch('app.notify_client.notification_api_client.NotificationApiClient.get')
     NotificationApiClient().get_notification('foo', 'bar')