diff --git a/library/src/main/java/cat/ereza/customactivityoncrash/CustomActivityOnCrash.java b/library/src/main/java/cat/ereza/customactivityoncrash/CustomActivityOnCrash.java
index 6f35b5e..36b2350 100644
--- a/library/src/main/java/cat/ereza/customactivityoncrash/CustomActivityOnCrash.java
+++ b/library/src/main/java/cat/ereza/customactivityoncrash/CustomActivityOnCrash.java
@@ -59,6 +59,7 @@ public final class CustomActivityOnCrash {
 
     //Extras passed to the error activity
     private static final String EXTRA_CONFIG = "cat.ereza.customactivityoncrash.EXTRA_CONFIG";
+    private static final String EXTRA_CUSTOM_CRASH_DATA = "cat.ereza.customactivityoncrash.EXTRA_CUSTOM_CRASH_DATA";
     private static final String EXTRA_STACK_TRACE = "cat.ereza.customactivityoncrash.EXTRA_STACK_TRACE";
     private static final String EXTRA_ACTIVITY_LOG = "cat.ereza.customactivityoncrash.EXTRA_ACTIVITY_LOG";
 
@@ -153,6 +154,11 @@ public static void install(@Nullable final Context context) {
                                     }
                                     intent.putExtra(EXTRA_STACK_TRACE, stackTraceString);
 
+                                        CustomCrashDataCollector collector = config.getCustomCrashDataCollector();
+                                        if (collector != null) {
+                                            intent.putExtra(EXTRA_CUSTOM_CRASH_DATA, collector.onCrash(intent));
+                                        }
+                                  
                                     if (config.isTrackActivities()) {
                                         StringBuilder activityLogStringBuilder = new StringBuilder();
                                         while (!activityLog.isEmpty()) {
@@ -277,6 +283,17 @@ public static String getStackTraceFromIntent(@NonNull Intent intent) {
         return intent.getStringExtra(CustomActivityOnCrash.EXTRA_STACK_TRACE);
     }
 
+    /**
+     * Given an Intent, returns the custom collector trace extra from it.
+     *
+     * @param intent The Intent. Must not be null.
+     * @return The custom collector trace, or null if not provided.
+     */
+    @Nullable
+    public static String getCustomCrashDataFromIntent(@NonNull Intent intent) {
+        return intent.getStringExtra(CustomActivityOnCrash.EXTRA_CUSTOM_CRASH_DATA);
+    }
+
     /**
      * Given an Intent, returns the config extra from it.
      *
@@ -348,6 +365,13 @@ public static String getAllErrorDetailsFromIntent(@NonNull Context context, @Non
             errorDetails += "\nUser actions: \n";
             errorDetails += activityLog;
         }
+
+        String customTrace = getCustomCrashDataFromIntent(intent);
+        if (customTrace != null) {
+            errorDetails += "\nCustom trace: \n";
+            errorDetails += customTrace;
+        }
+
         return errorDetails;
     }
 
@@ -729,4 +753,11 @@ public interface EventListener extends Serializable {
 
         void onCloseAppFromErrorActivity();
     }
+
+    /**
+     * Interface to be called to register a custom crash data collector
+     */
+    public interface CustomCrashDataCollector extends Serializable {
+        String onCrash(Intent intent);
+    }
 }
diff --git a/library/src/main/java/cat/ereza/customactivityoncrash/config/CaocConfig.java b/library/src/main/java/cat/ereza/customactivityoncrash/config/CaocConfig.java
index 164d945..c3bbd01 100644
--- a/library/src/main/java/cat/ereza/customactivityoncrash/config/CaocConfig.java
+++ b/library/src/main/java/cat/ereza/customactivityoncrash/config/CaocConfig.java
@@ -51,6 +51,7 @@ public class CaocConfig implements Serializable {
     private Integer errorDrawable = null;
     private Class<? extends Activity> errorActivityClass = null;
     private Class<? extends Activity> restartActivityClass = null;
+    private CustomActivityOnCrash.CustomCrashDataCollector customCrashDataCollector = null;
     private CustomActivityOnCrash.EventListener eventListener = null;
 
     @BackgroundMode
@@ -129,6 +130,15 @@ public void setErrorActivityClass(@Nullable Class<? extends Activity> errorActiv
         this.errorActivityClass = errorActivityClass;
     }
 
+    @Nullable
+    public CustomActivityOnCrash.CustomCrashDataCollector getCustomCrashDataCollector() {
+        return customCrashDataCollector;
+    }
+
+    public void setCustomCrashDataCollector(@Nullable CustomActivityOnCrash.CustomCrashDataCollector collector) {
+        this.customCrashDataCollector = collector;
+    }
+
     @Nullable
     public Class<? extends Activity> getRestartActivityClass() {
         return restartActivityClass;
@@ -165,6 +175,7 @@ public static Builder create() {
             config.minTimeBetweenCrashesMs = currentConfig.minTimeBetweenCrashesMs;
             config.errorDrawable = currentConfig.errorDrawable;
             config.errorActivityClass = currentConfig.errorActivityClass;
+            config.customCrashDataCollector = currentConfig.customCrashDataCollector;
             config.restartActivityClass = currentConfig.restartActivityClass;
             config.eventListener = currentConfig.eventListener;
 
@@ -284,6 +295,23 @@ public Builder errorActivity(@Nullable Class<? extends Activity> errorActivityCl
             return this;
         }
 
+        /**
+         * Sets the custom error data collector class to launch when a crash occurs.
+         * If null, the default error activity will be used.
+         *
+         * @param collector The data collector.
+         * @throws IllegalArgumentException if the collector is an inner or anonymous class
+         */
+        @NonNull
+        public Builder customCrashDataCollector(@Nullable CustomActivityOnCrash.CustomCrashDataCollector collector) {
+            if (collector != null && collector.getClass().getEnclosingClass() != null && !Modifier.isStatic(collector.getClass().getModifiers())) {
+                throw new IllegalArgumentException("The event listener cannot be an inner or anonymous class, because it will need to be serialized. Change it to a class of its own, or make it a static inner class.");
+            } else {
+                config.customCrashDataCollector = collector;
+            }
+            return this;
+        }
+
         /**
          * Sets the main activity class that the error activity must launch when a crash occurs.
          * If not set or set to null, the default launch activity will be used.