diff --git a/runelite-api/src/main/java/net/runelite/api/Client.java b/runelite-api/src/main/java/net/runelite/api/Client.java
index 9a08b0ee66..12782ffab5 100644
--- a/runelite-api/src/main/java/net/runelite/api/Client.java
+++ b/runelite-api/src/main/java/net/runelite/api/Client.java
@@ -176,4 +176,8 @@ public interface Client
 
 
 	BufferProvider getBufferProvider();
+
+	int getMouseIdleTicks();
+
+	int getKeyboardIdleTicks();
 }
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/idlenotifier/IdleNotifierPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/idlenotifier/IdleNotifierPlugin.java
index 2bf2562c5f..1fe18bdcf3 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/idlenotifier/IdleNotifierPlugin.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/idlenotifier/IdleNotifierPlugin.java
@@ -115,6 +115,9 @@ import net.runelite.client.ui.ClientUI;
 )
 public class IdleNotifierPlugin extends Plugin
 {
+	private static final int LOGOUT_WARNING_AFTER_TICKS = 14000; // 4 minutes and 40 seconds
+	private static final Duration SIX_HOUR_LOGOUT_WARNING_AFTER_DURATION = Duration.ofMinutes(340);
+
 	@Inject
 	Notifier notifier;
 
@@ -134,6 +137,11 @@ public class IdleNotifierPlugin extends Plugin
 	private boolean notifyIdle = false;
 	private boolean notifyHitpoints = true;
 	private boolean notifyPrayer = true;
+	private boolean notifyIdleLogout = true;
+	private boolean notify6HourLogout = true;
+
+	private Instant sixHourWarningTime;
+	private boolean ready;
 
 	@Provides
 	IdleNotifierConfig provideConfig(ConfigManager configManager)
@@ -242,6 +250,24 @@ public class IdleNotifierPlugin extends Plugin
 	public void onGameStateChanged(GameStateChanged gameStateChanged)
 	{
 		lastInteracting = null;
+
+		GameState state = gameStateChanged.getGameState();
+
+		switch (state)
+		{
+			case LOGGING_IN:
+			case HOPPING:
+			case CONNECTION_LOST:
+				ready = true;
+				break;
+			case LOGGED_IN:
+				if (ready)
+				{
+					sixHourWarningTime = Instant.now().plus(SIX_HOUR_LOGOUT_WARNING_AFTER_DURATION);
+					ready = false;
+				}
+				break;
+		}
 	}
 
 	@Schedule(
@@ -257,6 +283,33 @@ public class IdleNotifierPlugin extends Plugin
 			return;
 		}
 
+		if (client.getMouseIdleTicks() > LOGOUT_WARNING_AFTER_TICKS
+				&& client.getKeyboardIdleTicks() > LOGOUT_WARNING_AFTER_TICKS)
+		{
+			if (notifyIdleLogout)
+			{
+				sendNotification("[" + local.getName() + "] is about to log out from idling too long!");
+				notifyIdleLogout = false;
+			}
+		}
+		else
+		{
+			notifyIdleLogout = true;
+		}
+
+		if (Instant.now().compareTo(sixHourWarningTime) >= 0)
+		{
+			if (notify6HourLogout)
+			{
+				sendNotification("[" + local.getName() + "] is about to log out from being online for 6 hours!");
+				notify6HourLogout = false;
+			}
+		}
+		else
+		{
+			notify6HourLogout = true;
+		}
+
 		Duration waitDuration = Duration.ofMillis(config.getTimeout());
 		if (notifyIdle && local.getAnimation() == IDLE
 			&& Instant.now().compareTo(lastAnimating.plus(waitDuration)) >= 0)
diff --git a/runescape-api/src/main/java/net/runelite/rs/api/RSClient.java b/runescape-api/src/main/java/net/runelite/rs/api/RSClient.java
index 4d6865e185..2f1c0fb568 100644
--- a/runescape-api/src/main/java/net/runelite/rs/api/RSClient.java
+++ b/runescape-api/src/main/java/net/runelite/rs/api/RSClient.java
@@ -355,4 +355,12 @@ public interface RSClient extends RSGameEngine, Client
 	@Import("rasterProvider")
 	@Override
 	BufferProvider getBufferProvider();
+
+	@Import("mouseIdleTicks")
+	@Override
+	int getMouseIdleTicks();
+
+	@Import("keyboardIdleTicks")
+	@Override
+	int getKeyboardIdleTicks();
 }