diff --git a/app/src/debug/java/eu.faircode.email/CoalMine.java b/app/src/debug/java/eu.faircode.email/CoalMine.java
index 65c09a11b3..c5a067f1fa 100644
--- a/app/src/debug/java/eu.faircode.email/CoalMine.java
+++ b/app/src/debug/java/eu.faircode.email/CoalMine.java
@@ -40,65 +40,38 @@ public class CoalMine {
     static void setup(boolean enabled) {
         List<ObjectInspector> inspectors = new ArrayList<>(LeakCanary.getConfig().getObjectInspectors());
 
-        inspectors.add(new ObjectInspector() {
-            @Override
-            public void inspect(@NonNull ObjectReporter reporter) {
-                String clazz = SimpleTask.class.getName();
-                reporter.whenInstanceOf(clazz, new Function2<ObjectReporter, HeapObject.HeapInstance, Unit>() {
-                    @Override
-                    public Unit invoke(ObjectReporter reporter, HeapObject.HeapInstance instance) {
-                        HeapField fname = instance.get(clazz, "name");
-                        if (fname != null) {
-                            String name = fname.getValue().readAsJavaString();
-                            reporter.getNotLeakingReasons().add("name=" + name);
-                        }
-                        HeapField fstarted = instance.get(clazz, "started");
-                        if (fstarted != null) {
-                            Long started = fstarted.getValue().getAsLong();
-                            if (started != null)
-                                reporter.getNotLeakingReasons().add("started=" + new Date(started));
-                        }
-                        return null;
-                    }
-                });
-            }
-        });
+        // https://square.github.io/leakcanary/recipes/#identifying-leaking-objects-and-labeling-objects
+        for (Class<?> clazz : new Class<?>[]{SimpleTask.class, TwoStateOwner.class, RunnableEx.class})
+            inspectors.add(new ObjectInspector() {
+                @Override
+                public void inspect(@NonNull ObjectReporter reporter) {
+                    String className = clazz.getName();
+                    reporter.whenInstanceOf(className, new Function2<ObjectReporter, HeapObject.HeapInstance, Unit>() {
+                        @Override
+                        public Unit invoke(ObjectReporter reporter, HeapObject.HeapInstance instance) {
+                            HeapField hfName = instance.get(className, "name");
+                            if (hfName != null) {
+                                String label = hfName.getValue().readAsJavaString();
+                                reporter.getLabels().add("name=" + label);
+                            }
 
-        inspectors.add(new ObjectInspector() {
-            @Override
-            public void inspect(@NonNull ObjectReporter reporter) {
-                String clazz = TwoStateOwner.class.getName();
-                reporter.whenInstanceOf(clazz, new Function2<ObjectReporter, HeapObject.HeapInstance, Unit>() {
-                    @Override
-                    public Unit invoke(ObjectReporter reporter, HeapObject.HeapInstance instance) {
-                        HeapField fname = instance.get(clazz, "name");
-                        if (fname != null) {
-                            String name = fname.getValue().readAsJavaString();
-                            reporter.getNotLeakingReasons().add("name=" + name);
-                        }
-                        return null;
-                    }
-                });
-            }
-        });
+                            // Could be different class loader
+                            if (className.equals(SimpleTask.class.getName())) {
+                                HeapField hfStarted = instance.get(className, "started");
+                                if (hfStarted != null) {
+                                    Long started = hfStarted.getValue().getAsLong();
+                                    if (started != null) {
+                                        String label = (started == 0 ? null : new Date(started).toString());
+                                        reporter.getLabels().add("started=" + label);
+                                    }
+                                }
+                            }
 
-        inspectors.add(new ObjectInspector() {
-            @Override
-            public void inspect(@NonNull ObjectReporter reporter) {
-                String clazz = RunnableEx.class.getName();
-                reporter.whenInstanceOf(clazz, new Function2<ObjectReporter, HeapObject.HeapInstance, Unit>() {
-                    @Override
-                    public Unit invoke(ObjectReporter reporter, HeapObject.HeapInstance instance) {
-                        HeapField fname = instance.get(clazz, "name");
-                        if (fname != null) {
-                            String name = fname.getValue().readAsJavaString();
-                            reporter.getNotLeakingReasons().add("name=" + name);
+                            return null;
                         }
-                        return null;
-                    }
-                });
-            }
-        });
+                    });
+                }
+            });
 
         LeakCanary.Config config = LeakCanary.getConfig().newBuilder()
                 .dumpHeap(enabled && BuildConfig.DEBUG)