Optionally search on sent time

app/src/main/java/eu/faircode/email/Core.java

@@ -1809,9 +1809,10 @@ class Core {
             // Reduce list of local uids
             Flags flags = ifolder.getPermanentFlags();
             SearchTerm searchTerm = new ReceivedDateTerm(ComparisonTerm.GE, new Date(sync_time));
-            searchTerm = new OrTerm(searchTerm, new SentDateTerm(ComparisonTerm.GE, new Date(sync_time)));
-            if (sync_nodate)
+            if (sync_nodate) {
+                searchTerm = new OrTerm(searchTerm, new SentDateTerm(ComparisonTerm.GE, new Date(sync_time)));
                 searchTerm = new OrTerm(searchTerm, new ReceivedDateTerm(ComparisonTerm.LT, new Date(365 * 24 * 3600 * 1000L)));
+            }
             if (sync_unseen && flags.contains(Flags.Flag.SEEN))
                 searchTerm = new OrTerm(searchTerm, new FlagTerm(new Flags(Flags.Flag.SEEN), false));
             if (sync_flagged && flags.contains(Flags.Flag.FLAGGED))