diff --git a/app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java b/app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java
index 7aef6fcc00..c38378a092 100644
--- a/app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java
+++ b/app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java
@@ -32,6 +32,7 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.AdapterView;
+import android.widget.CheckBox;
 import android.widget.CompoundButton;
 import android.widget.Spinner;
 import android.widget.TextView;
@@ -45,6 +46,7 @@ import androidx.fragment.app.DialogFragment;
 import androidx.lifecycle.Lifecycle;
 import androidx.preference.PreferenceManager;
 
+import java.text.DateFormatSymbols;
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 
@@ -52,9 +54,10 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
     private SwitchCompat swEnabled;
     private Spinner spPollInterval;
     private SwitchCompat swSchedule;
+    private TextView tvSchedulePro;
     private TextView tvScheduleStart;
     private TextView tvScheduleEnd;
-    private TextView tvSchedulePro;
+    private CheckBox[] cbDay;
     private SwitchCompat swUnseen;
     private SwitchCompat swFlagged;
     private SwitchCompat swDeleteUnseen;
@@ -83,9 +86,18 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
         swEnabled = view.findViewById(R.id.swEnabled);
         spPollInterval = view.findViewById(R.id.spPollInterval);
         swSchedule = view.findViewById(R.id.swSchedule);
+        tvSchedulePro = view.findViewById(R.id.tvSchedulePro);
         tvScheduleStart = view.findViewById(R.id.tvScheduleStart);
         tvScheduleEnd = view.findViewById(R.id.tvScheduleEnd);
-        tvSchedulePro = view.findViewById(R.id.tvSchedulePro);
+        cbDay = new CheckBox[]{
+                view.findViewById(R.id.cbDay0),
+                view.findViewById(R.id.cbDay1),
+                view.findViewById(R.id.cbDay2),
+                view.findViewById(R.id.cbDay3),
+                view.findViewById(R.id.cbDay4),
+                view.findViewById(R.id.cbDay5),
+                view.findViewById(R.id.cbDay6)
+        };
         swUnseen = view.findViewById(R.id.swUnseen);
         swFlagged = view.findViewById(R.id.swFlagged);
         swDeleteUnseen = view.findViewById(R.id.swDeleteUnseen);
@@ -144,6 +156,8 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
             }
         });
 
+        Helper.linkPro(tvSchedulePro);
+
         tvScheduleStart.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -166,7 +180,18 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
             }
         });
 
-        Helper.linkPro(tvSchedulePro);
+        String[] daynames = new DateFormatSymbols().getWeekdays();
+        for (int i = 0; i < 7; i++) {
+            final int day = i;
+            cbDay[i].setText(daynames[i + 1]);
+            cbDay[i].setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+                @Override
+                public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                    prefs.edit().putBoolean("schedule_day" + day, isChecked).apply();
+                    ServiceSynchronize.reschedule(getContext());
+                }
+            });
+        }
 
         swUnseen.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
@@ -294,6 +319,8 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
         swSchedule.setEnabled(pro);
         tvScheduleStart.setText(formatHour(getContext(), prefs.getInt("schedule_start", 0)));
         tvScheduleEnd.setText(formatHour(getContext(), prefs.getInt("schedule_end", 0)));
+        for (int i = 0; i < 7; i++)
+            cbDay[i].setChecked(prefs.getBoolean("schedule_day" + i, true));
 
         swUnseen.setChecked(prefs.getBoolean("sync_unseen", false));
         swFlagged.setChecked(prefs.getBoolean("sync_flagged", false));
diff --git a/app/src/main/res/layout/fragment_options_synchronize.xml b/app/src/main/res/layout/fragment_options_synchronize.xml
index cb4120fffb..3c2a2ec754 100644
--- a/app/src/main/res/layout/fragment_options_synchronize.xml
+++ b/app/src/main/res/layout/fragment_options_synchronize.xml
@@ -107,6 +107,16 @@
             app:layout_constraintTop_toBottomOf="@id/tvPollHint"
             app:switchPadding="12dp" />
 
+        <TextView
+            android:id="@+id/tvSchedulePro"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/title_pro_feature"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textColor="?android:attr/textColorLink"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/swSchedule" />
+
         <TextView
             android:id="@+id/tvScheduleStart"
             android:layout_width="wrap_content"
@@ -116,7 +126,7 @@
             android:textAppearance="@style/TextAppearance.AppCompat.Medium"
             android:textColor="?android:attr/textColorPrimary"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/swSchedule" />
+            app:layout_constraintTop_toBottomOf="@id/tvSchedulePro" />
 
         <TextView
             android:id="@+id/tvScheduleSeparator"
@@ -152,16 +162,63 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/tvScheduleStart" />
 
-        <TextView
-            android:id="@+id/tvSchedulePro"
+        <CheckBox
+            android:id="@+id/cbDay0"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/title_pro_feature"
-            android:textAppearance="@style/TextAppearance.AppCompat.Small"
-            android:textColor="?android:attr/textColorLink"
+            android:layout_marginTop="12dp"
+            android:text="Sunday"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/tvScheduleHint" />
 
+        <CheckBox
+            android:id="@+id/cbDay1"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Monday"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/cbDay0" />
+
+        <CheckBox
+            android:id="@+id/cbDay2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Tuesday"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/cbDay1" />
+
+        <CheckBox
+            android:id="@+id/cbDay3"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Wednesday"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/cbDay2" />
+
+        <CheckBox
+            android:id="@+id/cbDay4"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Thursday"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/cbDay3" />
+
+        <CheckBox
+            android:id="@+id/cbDay5"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Friday"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/cbDay4" />
+
+        <CheckBox
+            android:id="@+id/cbDay6"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Saturday"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/cbDay5" />
+
         <androidx.appcompat.widget.SwitchCompat
             android:id="@+id/swUnseen"
             android:layout_width="0dp"
@@ -170,7 +227,7 @@
             android:text="@string/title_advanced_unseen"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/tvSchedulePro"
+            app:layout_constraintTop_toBottomOf="@id/cbDay6"
             app:switchPadding="12dp" />
 
         <TextView