Admin uses correct endpoint for getting user by email address.

tests/app/main/notify_client/test_user_client.py

@@ -0,0 +1,15 @@
+from app.notify_client.user_api_client import UserApiClient
+
+
+def test_client_uses_correct_find_by_email(mocker, api_user_active):
+
+    expected_url = '/user/email'
+    expected_params = {'email': api_user_active.email_address}
+
+    client = UserApiClient()
+    client.max_failed_login_count = 1  # doesn't matter for this test
+    mock_get = mocker.patch('app.notify_client.user_api_client.UserApiClient.get')
+
+    client.get_user_by_email(api_user_active.email_address)
+
+    mock_get.assert_called_once_with(expected_url, params=expected_params)