minor fixes for deletion compatibility

back/mails/imap/Mailbox.ts

@@ -137,7 +137,7 @@ export default class Mailbox {
             } catch (error) {
                 logger.err("Failed to sync message " + error);
             }
-            logger.log(`Saved messages ${i + STEP > nbMessageToSync ? nbMessageToSync : i + STEP}/${nbMessageToSync}`);
+            logger.log(`Saved messages in uids ${i + STEP > nbMessageToSync ? nbMessageToSync : i + STEP}/${nbMessageToSync}`);
         }
 
         // if has receive new msg during last sync then start a new sync