diff --git a/README.md b/README.md
index 899d14c..8614043 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ Add this to your module's `build.gradle` file (make sure the version matches the
 ```gradle
 dependencies {
   
-  compile 'com.afollestad:icon-request:4.0.0'
+  compile 'com.afollestad:icon-request:4.0.1'
 }
 ```
 
@@ -165,7 +165,13 @@ You can pass an `apiHost` and `apiKey` to integrate with [Arctic Request Manager
 With a configured `ArcticRequest` instance, you can load unthemed apps:
 
 ```kotlin
+// Rely on only the onLoad and onLoadError callbacks passed into ArcticRequest(...).
+// If onLoadError isn't set, an error will result in a thrown RuntimeException.
 request.performLoad()
+
+// You will still receive onLoad and onLoadError notifications, but the result is also passed
+// into the parameterized lambda.
+request.performLoad { list, throwable ->  }
 ```
 
 Your `onLoaded` callback will receive a List of unthemed apps. If an error occurs,
@@ -210,7 +216,13 @@ filtered list based off the list of all loaded apps.
 Once you've selected apps, you can send a request:
 
 ```kotlin
+// Rely on only the onSent and onSendError callbacks passed into ArcticRequest(...).
+// If onSendError isn't set, an error will result in a thrown RuntimeException.
 request.performSend()
+
+// You will still receive onSent and onSendError notifications, but the result is also passed
+// into the parameterized lambda.
+request.performSend { count, throwable ->  }
 ```
 
 Your `onSent` callback will be invoked if all is well; your `onSendError` callback
diff --git a/dependencies.gradle b/dependencies.gradle
index f54c839..72cdf33 100644
--- a/dependencies.gradle
+++ b/dependencies.gradle
@@ -1,8 +1,8 @@
 ext.versions = [
     minSdk        : 14,
     compileSdk    : 27,
-    publishVersion: '4.0.0',
-    versionCode   : 4,
+    publishVersion: '4.0.1',
+    versionCode   : 5,
     kotlin        : '1.2.41',
 
     versionsPlugin: '0.17.0',
diff --git a/library/src/main/java/com/afollestad/iconrequest/ArcticRequest.kt b/library/src/main/java/com/afollestad/iconrequest/ArcticRequest.kt
index 97b70ff..7c4b217 100644
--- a/library/src/main/java/com/afollestad/iconrequest/ArcticRequest.kt
+++ b/library/src/main/java/com/afollestad/iconrequest/ArcticRequest.kt
@@ -22,6 +22,8 @@ typealias VoidCallback = (() -> (Unit))?
 typealias LoadedCallback = ((List<AppModel>) -> (Unit))?
 typealias SentCallback = ((Int) -> (Unit))?
 typealias AppCallback = ((AppModel) -> (Unit))?
+typealias LoadedAndErrorCallback = ((List<AppModel>, Throwable?) -> (Unit))?
+typealias SentAndErrorCallback = ((Int, Throwable?) -> (Unit))?
 
 /** @author Aidan Follestad (afollestad) */
 class ArcticRequest constructor(
@@ -76,7 +78,7 @@ class ArcticRequest constructor(
     out.putSerializable(KEY_APPS, storedLoadedApps.toTypedArray())
   }
 
-  fun performLoad() {
+  fun performLoad(callback: LoadedAndErrorCallback = null) {
     onLoading?.invoke()
     disposables += Observable.just(true)
         .flatMap {
@@ -93,10 +95,15 @@ class ArcticRequest constructor(
         }
         .observeToMainThread()
         .subscribe(
-            { onLoaded?.invoke(it) },
             {
-              if (onLoadError != null) onLoadError.invoke(it)
-              else throw RuntimeException(it)
+              onLoaded?.invoke(it)
+              callback?.invoke(it, null)
+            },
+            {
+              if (onLoadError != null || callback != null) {
+                onLoadError?.invoke(it)
+                callback?.invoke(listOf(), it)
+              } else throw RuntimeException(it)
             }
         )
   }
@@ -201,7 +208,7 @@ class ArcticRequest constructor(
     onLoaded?.invoke(storedLoadedApps)
   }
 
-  fun performSend() {
+  fun performSend(callback: SentAndErrorCallback = null) {
     onSending?.invoke()
     disposables += Observable.just(true)
         .map { selectedApps }
@@ -214,10 +221,13 @@ class ArcticRequest constructor(
             {
               resetSelection()
               onSent?.invoke(it)
+              callback?.invoke(it, null)
             },
             {
-              if (onSendError != null) onSendError.invoke(it)
-              else throw RuntimeException(it)
+              if (onSendError != null || callback != null) {
+                onSendError?.invoke(it)
+                callback?.invoke(0, it)
+              } else throw RuntimeException(it)
             }
         )
   }