Keep sent messages in user folders

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

@@ -2973,7 +2973,7 @@ class Core {
 
             // Delete not synchronized messages without uid
             if (!EntityFolder.isOutgoing(folder.type)) {
-                int orphans = db.message().deleteOrphans(folder.id);
+                int orphans = db.message().deleteOrphans(folder.id, new Date().getTime());
                 Log.i(folder.name + " deleted orphans=" + orphans);
             }
 

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

@@ -821,6 +821,7 @@ public interface DaoMessage {
     @Query("DELETE FROM message" +
             " WHERE folder = :folder" +
             " AND uid IS NULL" +
+            " AND (ui_busy IS NULL OR ui_busy < :now)" +
             " AND NOT EXISTS" +
             "  (SELECT * FROM operation" +
             "  WHERE operation.message = message.id" +
@@ -831,7 +832,7 @@ public interface DaoMessage {
             "  WHERE o.account = message.account" +
             "  AND o.name = '" + EntityOperation.MOVE + "'" +
             "  AND m.msgid = message.msgid)")
-    int deleteOrphans(long folder);
+    int deleteOrphans(long folder, long now);
 
     @Query("SELECT * FROM message" +
             " WHERE folder = :folder" +

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

@@ -594,6 +594,7 @@ public class ServiceSend extends ServiceBase implements SharedPreferences.OnShar
                 message.seen = true;
                 message.ui_seen = true;
                 message.ui_hide = true;
+                message.ui_busy = Long.MAX_VALUE; // Needed to keep messages in user folders
                 message.error = null;
                 message.id = db.message().insertMessage(message);