diff --git a/app/src/main/java/eu/faircode/email/ApplicationEx.java b/app/src/main/java/eu/faircode/email/ApplicationEx.java
index 6ebb4a73c5..c79755479e 100644
--- a/app/src/main/java/eu/faircode/email/ApplicationEx.java
+++ b/app/src/main/java/eu/faircode/email/ApplicationEx.java
@@ -651,7 +651,8 @@ public class ApplicationEx extends Application
         } else if (version < 1955) {
             if (!prefs.contains("doubletap"))
                 editor.putBoolean("doubletap", true);
-        }
+        } else if (version < 1960)
+            editor.remove("sqlite_auto_vacuum");
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && !BuildConfig.DEBUG)
             editor.remove("background_service");
diff --git a/app/src/main/java/eu/faircode/email/DB.java b/app/src/main/java/eu/faircode/email/DB.java
index ccb11e74b1..af9a94bc7b 100644
--- a/app/src/main/java/eu/faircode/email/DB.java
+++ b/app/src/main/java/eu/faircode/email/DB.java
@@ -410,13 +410,21 @@ public abstract class DB extends RoomDatabase {
 
                         // https://www.sqlite.org/pragma.html#pragma_auto_vacuum
                         // https://android.googlesource.com/platform/external/sqlite.git/+/6ab557bdc070f11db30ede0696888efd19800475%5E!/
-                        boolean sqlite_auto_vacuum = prefs.getBoolean("sqlite_auto_vacuum", !Helper.isRedmiNote());
+                        boolean sqlite_auto_vacuum = prefs.getBoolean("sqlite_auto_vacuum", false);
                         String mode = (sqlite_auto_vacuum ? "FULL" : "INCREMENTAL");
                         Log.i("Set PRAGMA auto_vacuum = " + mode);
                         try (Cursor cursor = db.query("PRAGMA auto_vacuum = " + mode + ";", null)) {
                             cursor.moveToNext(); // required
                         }
 
+                        // https://sqlite.org/pragma.html#pragma_synchronous
+                        boolean sqlite_sync_extra = prefs.getBoolean("sqlite_sync_extra", true);
+                        String sync = (sqlite_sync_extra ? "EXTRA" : "NORMAL");
+                        Log.i("Set PRAGMA synchronous = " + sync);
+                        try (Cursor cursor = db.query("PRAGMA synchronous = " + sync + ";", null)) {
+                            cursor.moveToNext(); // required
+                        }
+
                         // https://www.sqlite.org/pragma.html#pragma_cache_size
                         Integer cache_size = getCacheSizeKb(context);
                         if (cache_size != null) {
diff --git a/app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java b/app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java
index ecfabbbb2b..758b82af66 100644
--- a/app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java
+++ b/app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java
@@ -168,6 +168,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
     private SwitchCompat swCheckpoints;
     private SwitchCompat swAnalyze;
     private SwitchCompat swAutoVacuum;
+    private SwitchCompat swSyncExtra;
     private TextView tvSqliteCache;
     private SeekBar sbSqliteCache;
     private TextView tvChunkSize;
@@ -237,7 +238,8 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             "watchdog", "experiments", "main_log", "protocol", "log_level", "debug", "leak_canary",
             "test1", "test2", "test3", "test4", "test5",
             "work_manager", // "external_storage",
-            "query_threads", "wal", "sqlite_checkpoints", "sqlite_analyze", "sqlite_auto_vacuum", "sqlite_cache",
+            "query_threads", "wal",
+            "sqlite_checkpoints", "sqlite_analyze", "sqlite_auto_vacuum", "sqlite_sync_extra", "sqlite_cache",
             "chunk_size", "thread_range", "undo_manager",
             "webview_legacy", "browser_zoom", "fake_dark",
             "show_recent",
@@ -365,6 +367,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         swCheckpoints = view.findViewById(R.id.swCheckpoints);
         swAnalyze = view.findViewById(R.id.swAnalyze);
         swAutoVacuum = view.findViewById(R.id.swAutoVacuum);
+        swSyncExtra = view.findViewById(R.id.swSyncExtra);
         tvSqliteCache = view.findViewById(R.id.tvSqliteCache);
         sbSqliteCache = view.findViewById(R.id.sbSqliteCache);
         ibSqliteCache = view.findViewById(R.id.ibSqliteCache);
@@ -1121,11 +1124,22 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
                 prefs.edit()
                         .putBoolean("sqlite_auto_vacuum", checked)
                         .remove("debug")
-                        .apply();
+                        .commit();
                 ApplicationEx.restart(v.getContext(), "sqlite_auto_vacuum");
             }
         });
 
+        swSyncExtra.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton v, boolean checked) {
+                prefs.edit()
+                        .putBoolean("sqlite_sync_extra", checked)
+                        .remove("debug")
+                        .commit();
+                ApplicationEx.restart(v.getContext(), "sqlite_sync_extra");
+            }
+        });
+
         sbSqliteCache.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
             @Override
             public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
@@ -1964,7 +1978,8 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         swWal.setChecked(prefs.getBoolean("wal", true));
         swCheckpoints.setChecked(prefs.getBoolean("sqlite_checkpoints", true));
         swAnalyze.setChecked(prefs.getBoolean("sqlite_analyze", true));
-        swAutoVacuum.setChecked(prefs.getBoolean("sqlite_auto_vacuum", !Helper.isRedmiNote()));
+        swAutoVacuum.setChecked(prefs.getBoolean("sqlite_auto_vacuum", false));
+        swSyncExtra.setChecked(prefs.getBoolean("sqlite_sync_extra", true));
 
         int sqlite_cache = prefs.getInt("sqlite_cache", DB.DEFAULT_CACHE_SIZE);
         Integer cache_size = DB.getCacheSizeKb(getContext());
diff --git a/app/src/main/res/layout/fragment_options_misc.xml b/app/src/main/res/layout/fragment_options_misc.xml
index c08b574fca..53cd692ac2 100644
--- a/app/src/main/res/layout/fragment_options_misc.xml
+++ b/app/src/main/res/layout/fragment_options_misc.xml
@@ -1085,6 +1085,30 @@
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@id/swAutoVacuum" />
 
+                <androidx.appcompat.widget.SwitchCompat
+                    android:id="@+id/swSyncExtra"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/title_advanced_sync_extra"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/tvAutoVacuumHint"
+                    app:switchPadding="12dp" />
+
+                <TextView
+                    android:id="@+id/tvSyncExtraHint"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:layout_marginEnd="48dp"
+                    android:text="@string/title_advanced_english_hint"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    android:textStyle="italic"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/swSyncExtra" />
+
                 <TextView
                     android:id="@+id/tvSqliteCache"
                     android:layout_width="0dp"
@@ -1095,7 +1119,7 @@
                     android:textAppearance="@style/TextAppearance.AppCompat.Small"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/tvAutoVacuumHint" />
+                    app:layout_constraintTop_toBottomOf="@id/tvSyncExtraHint" />
 
                 <SeekBar
                     android:id="@+id/sbSqliteCache"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 0c0e137c5c..012c970f7f 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -782,6 +782,7 @@
     <string name="title_advanced_checkpoints" translatable="false">sqlite checkpoints</string>
     <string name="title_advanced_analyze" translatable="false">sqlite analyze</string>
     <string name="title_advanced_auto_vacuum" translatable="false">sqlite auto vacuum</string>
+    <string name="title_advanced_sync_extra" translatable="false">sqlite sync extra</string>
     <string name="title_advanced_sqlite_cache" translatable="false">sqlite cache: %1$s %% - %2$s</string>
     <string name="title_advanced_chunk_size" translatable="false">Chunk size: %1$d</string>
     <string name="title_advanced_thread_range" translatable="false">Thread range: %1$d days</string>