diff --git a/FAQ.md b/FAQ.md
index d694c75929..0c5f47bdb1 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -2259,6 +2259,14 @@ To enable/disable a specific account:
 
 Note that disabling an account will hide the account and all associated folders and messages.
 
+To set the poll interval:
+
+```
+(adb shell) adb shell am start-foreground-service -a eu.faircode.email.INTERVAL --ei minutes nnn
+```
+
+Where *nnn* is one of 0, 15, 30, 60, 120, 240, 480, 1440.
+
 You can automatically send commands with for example [Tasker](https://tasker.joaoapps.com/userguide/en/intents.html):
 
 ```
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 2874efcbe8..a425e5a4b1 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -355,6 +355,7 @@
                 <action android:name="${applicationId}.POLL" />
                 <action android:name="${applicationId}.ENABLE" />
                 <action android:name="${applicationId}.DISABLE" />
+                <action android:name="${applicationId}.INTERVAL" />
                 <action android:name="${applicationId}.DISCONNECT.ME" />
             </intent-filter>
         </service>
diff --git a/app/src/main/java/eu/faircode/email/ServiceExternal.java b/app/src/main/java/eu/faircode/email/ServiceExternal.java
index 0beae833c2..44e5b59af9 100644
--- a/app/src/main/java/eu/faircode/email/ServiceExternal.java
+++ b/app/src/main/java/eu/faircode/email/ServiceExternal.java
@@ -41,6 +41,7 @@ public class ServiceExternal extends Service {
     private static final String ACTION_POLL = BuildConfig.APPLICATION_ID + ".POLL";
     private static final String ACTION_ENABLE = BuildConfig.APPLICATION_ID + ".ENABLE";
     private static final String ACTION_DISABLE = BuildConfig.APPLICATION_ID + ".DISABLE";
+    private static final String ACTION_INTERVAL = BuildConfig.APPLICATION_ID + ".INTERVAL";
     private static final String ACTION_DISCONNECT_ME = BuildConfig.APPLICATION_ID + ".DISCONNECT.ME";
 
     static final int PI_WIDGET_ENABLE = 1;
@@ -48,6 +49,7 @@ public class ServiceExternal extends Service {
     // adb shell am start-foreground-service -a eu.faircode.email.POLL --es account Gmail
     // adb shell am start-foreground-service -a eu.faircode.email.ENABLE --es account Gmail
     // adb shell am start-foreground-service -a eu.faircode.email.DISABLE --es account Gmail
+    // adb shell am start-foreground-service -a eu.faircode.email.INTERVAL --ei minutes {0, 15, 30, 60, 120, 240, 480, 1440}
     // adb shell am start-foreground-service -a eu.faircode.email.DISCONNECT
 
     private static final ExecutorService executor =
@@ -96,6 +98,9 @@ public class ServiceExternal extends Service {
                             case ACTION_DISABLE:
                                 set(context, intent);
                                 break;
+                            case ACTION_INTERVAL:
+                                interval(context, intent);
+                                break;
                             case ACTION_DISCONNECT_ME:
                                 disconnect(context, intent);
                                 break;
@@ -163,6 +168,17 @@ public class ServiceExternal extends Service {
         ServiceSynchronize.eval(context, "external poll account=" + accountName);
     }
 
+    private static void interval(Context context, Intent intent) {
+        int minutes = intent.getIntExtra("minutes", 0);
+        int[] values = context.getResources().getIntArray(R.array.pollIntervalValues);
+        for (int value : values)
+            if (value >= minutes) {
+                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+                prefs.edit().putInt("poll_interval", value).apply();
+                break;
+            }
+    }
+
     private static void set(Context context, Intent intent) {
         String accountName = intent.getStringExtra("account");
         boolean enabled = ACTION_ENABLE.equals(intent.getAction());