diff --git a/app/build.gradle b/app/build.gradle
index 5de5a05bbd..bd0a3ddef9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -278,6 +278,8 @@ dependencies {
     def appauth_version = "0.7.1"
     def jcharset_version = "2.1"
     def apache_poi = "3.17" // Do not update
+    def reactivestreams_version = "1.0.3"
+    def rxjava2_version = "2.2.21"
 
     // https://developer.android.com/jetpack/androidx/releases/startup
     implementation "androidx.startup:startup-runtime:$startup_version"
@@ -450,4 +452,9 @@ dependencies {
     // https://poi.apache.org/components/hmef/index.html
     // https://mvnrepository.com/artifact/org.apache.poi/poi-scratchpad
     implementation "org.apache.poi:poi-scratchpad:$apache_poi"
+
+    // https://mvnrepository.com/artifact/org.reactivestreams/reactive-streams
+    // https://mvnrepository.com/artifact/io.reactivex.rxjava2/rxjava
+    implementation "org.reactivestreams:reactive-streams:$reactivestreams_version"
+    implementation "io.reactivex.rxjava2:rxjava:$rxjava2_version"
 }
diff --git a/app/src/fdroid/AndroidManifest.xml b/app/src/fdroid/AndroidManifest.xml
index 51dfabcc15..302ca28008 100644
--- a/app/src/fdroid/AndroidManifest.xml
+++ b/app/src/fdroid/AndroidManifest.xml
@@ -395,6 +395,15 @@
             </intent-filter>
         </service>
 
+        <service
+            android:name=".ServicePowerControl"
+            android:label="@string/app_name"
+            android:permission="android.permission.BIND_CONTROLS">
+            <intent-filter>
+                <action android:name="android.service.controls.ControlsProviderService" />
+            </intent-filter>
+        </service>
+
         <provider
             android:name="androidx.core.content.FileProvider"
             android:authorities="${applicationId}"
diff --git a/app/src/github/AndroidManifest.xml b/app/src/github/AndroidManifest.xml
index 51dfabcc15..302ca28008 100644
--- a/app/src/github/AndroidManifest.xml
+++ b/app/src/github/AndroidManifest.xml
@@ -395,6 +395,15 @@
             </intent-filter>
         </service>
 
+        <service
+            android:name=".ServicePowerControl"
+            android:label="@string/app_name"
+            android:permission="android.permission.BIND_CONTROLS">
+            <intent-filter>
+                <action android:name="android.service.controls.ControlsProviderService" />
+            </intent-filter>
+        </service>
+
         <provider
             android:name="androidx.core.content.FileProvider"
             android:authorities="${applicationId}"
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 9afb863f7c..e90161bb90 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -397,6 +397,15 @@
             </intent-filter>
         </service>
 
+        <service
+            android:name=".ServicePowerControl"
+            android:label="@string/app_name"
+            android:permission="android.permission.BIND_CONTROLS">
+            <intent-filter>
+                <action android:name="android.service.controls.ControlsProviderService" />
+            </intent-filter>
+        </service>
+
         <provider
             android:name="androidx.core.content.FileProvider"
             android:authorities="${applicationId}"
diff --git a/app/src/main/java/eu/faircode/email/ActivityView.java b/app/src/main/java/eu/faircode/email/ActivityView.java
index a47863ab99..b9ab0d8e8f 100644
--- a/app/src/main/java/eu/faircode/email/ActivityView.java
+++ b/app/src/main/java/eu/faircode/email/ActivityView.java
@@ -41,7 +41,6 @@ import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Button;
 import android.widget.ImageButton;
 import android.widget.LinearLayout;
 import android.widget.Toast;
@@ -128,6 +127,7 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
     static final int REQUEST_ERROR = 6;
     static final int REQUEST_UPDATE = 7;
     static final int REQUEST_WIDGET = 8;
+    static final int REQUEST_POWER = 9;
 
     static final String ACTION_VIEW_FOLDERS = BuildConfig.APPLICATION_ID + ".VIEW_FOLDERS";
     static final String ACTION_VIEW_MESSAGES = BuildConfig.APPLICATION_ID + ".VIEW_MESSAGES";
diff --git a/app/src/main/java/eu/faircode/email/ServicePowerControl.java b/app/src/main/java/eu/faircode/email/ServicePowerControl.java
new file mode 100644
index 0000000000..f6fdbe08ce
--- /dev/null
+++ b/app/src/main/java/eu/faircode/email/ServicePowerControl.java
@@ -0,0 +1,119 @@
+package eu.faircode.email;
+
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.graphics.drawable.Icon;
+import android.os.Build;
+import android.service.controls.Control;
+import android.service.controls.ControlsProviderService;
+import android.service.controls.DeviceTypes;
+import android.service.controls.actions.BooleanAction;
+import android.service.controls.actions.ControlAction;
+import android.service.controls.templates.ControlButton;
+import android.service.controls.templates.ToggleTemplate;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.RequiresApi;
+import androidx.preference.PreferenceManager;
+
+import org.reactivestreams.FlowAdapters;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Flow;
+import java.util.function.Consumer;
+
+import io.reactivex.Flowable;
+import io.reactivex.processors.ReplayProcessor;
+
+@RequiresApi(api = Build.VERSION_CODES.R)
+public class ServicePowerControl extends ControlsProviderService {
+    private ReplayProcessor updatePublisher;
+
+    private static String DEVICE_SYNC = BuildConfig.APPLICATION_ID + ".sync";
+
+    @NonNull
+    @Override
+    public Flow.Publisher<Control> createPublisherForAllAvailable() {
+        List controls = new ArrayList<>();
+        Control control = new Control.StatelessBuilder(DEVICE_SYNC, getPendingIntent())
+                .setCustomIcon(Icon.createWithResource(this, R.drawable.twotone_sync_24))
+                .setTitle(getString(R.string.app_name))
+                .setSubtitle(getString(R.string.title_widget_title_sync))
+                .setDeviceType(DeviceTypes.TYPE_GENERIC_ON_OFF)
+                .build();
+        controls.add(control);
+        return FlowAdapters.toFlowPublisher(Flowable.fromIterable(controls));
+    }
+
+    @NonNull
+    @Override
+    public Flow.Publisher<Control> createPublisherFor(@NonNull List<String> controlIds) {
+        updatePublisher = ReplayProcessor.create();
+
+        if (controlIds.contains(DEVICE_SYNC)) {
+            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
+            boolean enabled = prefs.getBoolean("enabled", true);
+
+            Control control = new Control.StatefulBuilder(DEVICE_SYNC, getPendingIntent())
+                    .setCustomIcon(Icon.createWithResource(this, enabled
+                            ? R.drawable.twotone_sync_24
+                            : R.drawable.twotone_sync_disabled_24))
+                    .setTitle(getString(R.string.app_name))
+                    .setSubtitle(getString(enabled
+                            ? R.string.title_legend_synchronize_on
+                            : R.string.title_legend_synchronize_off))
+                    .setDeviceType(DeviceTypes.TYPE_GENERIC_ON_OFF)
+                    .setStatus(Control.STATUS_OK)
+                    .setControlTemplate(new ToggleTemplate(
+                            DEVICE_SYNC,
+                            new ControlButton(enabled, getString(R.string.title_widget_title_sync))
+                    ))
+                    .build();
+
+            updatePublisher.onNext(control);
+        }
+
+        return FlowAdapters.toFlowPublisher(updatePublisher);
+    }
+
+    @Override
+    public void performControlAction(@NonNull String controlId, @NonNull ControlAction action, @NonNull Consumer<Integer> consumer) {
+        if (action instanceof BooleanAction) {
+            consumer.accept(ControlAction.RESPONSE_OK);
+
+            boolean enabled = ((BooleanAction) action).getNewState();
+            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
+            prefs.edit().putBoolean("enabled", enabled).apply();
+
+            Control control = new Control.StatefulBuilder(DEVICE_SYNC, getPendingIntent())
+                    .setCustomIcon(Icon.createWithResource(this, enabled
+                            ? R.drawable.twotone_sync_24
+                            : R.drawable.twotone_sync_disabled_24))
+                    .setTitle(getString(R.string.app_name))
+                    .setSubtitle(getString(enabled
+                            ? R.string.title_legend_synchronize_on
+                            : R.string.title_legend_synchronize_off))
+                    .setDeviceType(DeviceTypes.TYPE_GENERIC_ON_OFF)
+                    .setStatus(Control.STATUS_OK)
+                    .setControlTemplate(new ToggleTemplate(
+                            DEVICE_SYNC,
+                            new ControlButton(enabled, getString(R.string.title_widget_title_sync))
+                    ))
+                    .build();
+
+            updatePublisher.onNext(control);
+        }
+    }
+
+    private PendingIntent getPendingIntent() {
+        Context context = getBaseContext();
+        return PendingIntentCompat.getActivity(
+                context,
+                ActivityView.REQUEST_POWER,
+                new Intent(context, ActivityView.class),
+                PendingIntent.FLAG_UPDATE_CURRENT);
+    }
+}
diff --git a/app/src/play/AndroidManifest.xml b/app/src/play/AndroidManifest.xml
index f23bdc8d5b..1ddd58213c 100644
--- a/app/src/play/AndroidManifest.xml
+++ b/app/src/play/AndroidManifest.xml
@@ -396,6 +396,15 @@
             </intent-filter>
         </service>
 
+        <service
+            android:name=".ServicePowerControl"
+            android:label="@string/app_name"
+            android:permission="android.permission.BIND_CONTROLS">
+            <intent-filter>
+                <action android:name="android.service.controls.ControlsProviderService" />
+            </intent-filter>
+        </service>
+
         <provider
             android:name="androidx.core.content.FileProvider"
             android:authorities="${applicationId}"