diff --git a/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/controller/ObservationsController.kt b/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/controller/ObservationsController.kt
index 5947153..b14f711 100644
--- a/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/controller/ObservationsController.kt
+++ b/backend/src/main/kotlin/uk/co/neviyn/observationdatabase/controller/ObservationsController.kt
@@ -285,8 +285,10 @@ class ObservationsController {
         logger.info("Sending Observation data by email")
         if (::mailer.isInitialized) {
             val data = getObservations(observationsRequest)
-            if (data.isEmpty())
+            if (data.isEmpty()) {
+                logger.warn("Email not send, would contain no data")
                 throw ResponseStatusException(HttpStatus.BAD_REQUEST, "Request would send no data.")
+            }
             mailer.sendObservationData(data)
             return true
         } else {