diff --git a/app/src/main/java/com/bugsnag/android/AppDataCollector.kt b/app/src/main/java/com/bugsnag/android/AppDataCollector.kt
index 07fe06cbd9..696935490b 100644
--- a/app/src/main/java/com/bugsnag/android/AppDataCollector.kt
+++ b/app/src/main/java/com/bugsnag/android/AppDataCollector.kt
@@ -104,7 +104,7 @@ internal class AppDataCollector(
             return null
         }
 
-        val nowMs = System.currentTimeMillis()
+        val nowMs = SystemClock.elapsedRealtime()
         var durationMs: Long = 0
 
         val sessionStartTimeMs: Long = sessionTracker.lastEnteredForegroundMs
diff --git a/app/src/main/java/com/bugsnag/android/Breadcrumb.java b/app/src/main/java/com/bugsnag/android/Breadcrumb.java
index 5d7ba6a78c..79e2ef1538 100644
--- a/app/src/main/java/com/bugsnag/android/Breadcrumb.java
+++ b/app/src/main/java/com/bugsnag/android/Breadcrumb.java
@@ -1,5 +1,7 @@
 package com.bugsnag.android;
 
+import com.bugsnag.android.internal.DateUtils;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
diff --git a/app/src/main/java/com/bugsnag/android/BreadcrumbState.kt b/app/src/main/java/com/bugsnag/android/BreadcrumbState.kt
index 331ca721a5..20192ebea9 100644
--- a/app/src/main/java/com/bugsnag/android/BreadcrumbState.kt
+++ b/app/src/main/java/com/bugsnag/android/BreadcrumbState.kt
@@ -1,5 +1,6 @@
 package com.bugsnag.android
 
+import com.bugsnag.android.internal.DateUtils
 import java.io.IOException
 import java.util.concurrent.atomic.AtomicInteger
 
diff --git a/app/src/main/java/com/bugsnag/android/Client.java b/app/src/main/java/com/bugsnag/android/Client.java
index 205ecdfc44..e31df68f9f 100644
--- a/app/src/main/java/com/bugsnag/android/Client.java
+++ b/app/src/main/java/com/bugsnag/android/Client.java
@@ -79,7 +79,7 @@ public class Client implements MetadataAware, CallbackAware, UserAware {
     final ClientObservable clientObservable;
     PluginClient pluginClient;
 
-    final Notifier notifier = new Notifier();
+    final Notifier notifier;
 
     @Nullable
     final LastRunInfo lastRunInfo;
@@ -117,6 +117,8 @@ public class Client implements MetadataAware, CallbackAware, UserAware {
         ContextModule contextModule = new ContextModule(androidContext);
         appContext = contextModule.getCtx();
 
+        notifier = configuration.getNotifier();
+
         connectivity = new ConnectivityCompat(appContext, new Function2<Boolean, String, Unit>() {
             @Override
             public Unit invoke(Boolean hasConnection, String networkState) {
@@ -233,7 +235,8 @@ public class Client implements MetadataAware, CallbackAware, UserAware {
             DeliveryDelegate deliveryDelegate,
             LastRunInfoStore lastRunInfoStore,
             LaunchCrashTracker launchCrashTracker,
-            ExceptionHandler exceptionHandler
+            ExceptionHandler exceptionHandler,
+            Notifier notifier
     ) {
         this.immutableConfig = immutableConfig;
         this.metadataState = metadataState;
@@ -255,6 +258,7 @@ public class Client implements MetadataAware, CallbackAware, UserAware {
         this.launchCrashTracker = launchCrashTracker;
         this.lastRunInfo = null;
         this.exceptionHandler = exceptionHandler;
+        this.notifier = notifier;
     }
 
     void registerLifecycleCallbacks() {
diff --git a/app/src/main/java/com/bugsnag/android/ClientObservable.kt b/app/src/main/java/com/bugsnag/android/ClientObservable.kt
index d96724c100..cd6ab1fe5d 100644
--- a/app/src/main/java/com/bugsnag/android/ClientObservable.kt
+++ b/app/src/main/java/com/bugsnag/android/ClientObservable.kt
@@ -21,7 +21,8 @@ internal class ClientObservable : BaseObservable() {
                 conf.buildUuid,
                 conf.releaseStage,
                 lastRunInfoPath,
-                consecutiveLaunchCrashes
+                consecutiveLaunchCrashes,
+                conf.sendThreads
             )
         }
     }
diff --git a/app/src/main/java/com/bugsnag/android/ConfigInternal.kt b/app/src/main/java/com/bugsnag/android/ConfigInternal.kt
index e02e0ffdff..15e4526236 100644
--- a/app/src/main/java/com/bugsnag/android/ConfigInternal.kt
+++ b/app/src/main/java/com/bugsnag/android/ConfigInternal.kt
@@ -49,6 +49,8 @@ internal class ConfigInternal(var apiKey: String) : CallbackAware, MetadataAware
     var projectPackages: Set<String> = emptySet()
     var persistenceDirectory: File? = null
 
+    val notifier: Notifier = Notifier()
+
     protected val plugins = HashSet<Plugin>()
 
     override fun addOnError(onError: OnErrorCallback) = callbackState.addOnError(onError)
@@ -79,7 +81,7 @@ internal class ConfigInternal(var apiKey: String) : CallbackAware, MetadataAware
     }
 
     companion object {
-        private const val DEFAULT_MAX_BREADCRUMBS = 25
+        private const val DEFAULT_MAX_BREADCRUMBS = 50
         private const val DEFAULT_MAX_PERSISTED_SESSIONS = 128
         private const val DEFAULT_MAX_PERSISTED_EVENTS = 32
         private const val DEFAULT_LAUNCH_CRASH_THRESHOLD_MS: Long = 5000
diff --git a/app/src/main/java/com/bugsnag/android/Configuration.java b/app/src/main/java/com/bugsnag/android/Configuration.java
index 033a4d96e1..13c2daef93 100644
--- a/app/src/main/java/com/bugsnag/android/Configuration.java
+++ b/app/src/main/java/com/bugsnag/android/Configuration.java
@@ -513,7 +513,7 @@ public class Configuration implements CallbackAware, MetadataAware, UserAware {
      * Sets the maximum number of breadcrumbs which will be stored. Once the threshold is reached,
      * the oldest breadcrumbs will be deleted.
      *
-     * By default, 25 breadcrumbs are stored: this can be amended up to a maximum of 100.
+     * By default, 50 breadcrumbs are stored: this can be amended up to a maximum of 100.
      */
     public int getMaxBreadcrumbs() {
         return impl.getMaxBreadcrumbs();
@@ -523,7 +523,7 @@ public class Configuration implements CallbackAware, MetadataAware, UserAware {
      * Sets the maximum number of breadcrumbs which will be stored. Once the threshold is reached,
      * the oldest breadcrumbs will be deleted.
      *
-     * By default, 25 breadcrumbs are stored: this can be amended up to a maximum of 100.
+     * By default, 50 breadcrumbs are stored: this can be amended up to a maximum of 100.
      */
     public void setMaxBreadcrumbs(int maxBreadcrumbs) {
         if (maxBreadcrumbs >= MIN_BREADCRUMBS && maxBreadcrumbs <= MAX_BREADCRUMBS) {
@@ -981,4 +981,8 @@ public class Configuration implements CallbackAware, MetadataAware, UserAware {
     Set<Plugin> getPlugins() {
         return impl.getPlugins();
     }
+
+    Notifier getNotifier() {
+        return impl.getNotifier();
+    }
 }
diff --git a/app/src/main/java/com/bugsnag/android/DateUtils.java b/app/src/main/java/com/bugsnag/android/DateUtils.java
deleted file mode 100644
index 406e16d19b..0000000000
--- a/app/src/main/java/com/bugsnag/android/DateUtils.java
+++ /dev/null
@@ -1,42 +0,0 @@
-package com.bugsnag.android;
-
-import androidx.annotation.NonNull;
-
-import java.text.DateFormat;
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
-import java.util.Date;
-import java.util.Locale;
-import java.util.TimeZone;
-
-class DateUtils {
-    // SimpleDateFormat isn't thread safe, cache one instance per thread as needed.
-    private static final ThreadLocal<DateFormat> iso8601Holder = new ThreadLocal<DateFormat>() {
-        @NonNull
-        @Override
-        protected DateFormat initialValue() {
-            TimeZone tz = TimeZone.getTimeZone("UTC");
-            DateFormat iso8601 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
-            iso8601.setTimeZone(tz);
-            return iso8601;
-        }
-    };
-
-    @NonNull
-    static String toIso8601(@NonNull Date date) {
-        DateFormat dateFormat = iso8601Holder.get();
-        if (dateFormat == null) {
-            throw new IllegalStateException("Unable to find valid dateformatter");
-        }
-        return dateFormat.format(date);
-    }
-
-    @NonNull
-    static Date fromIso8601(@NonNull String date) {
-        try {
-            return iso8601Holder.get().parse(date);
-        } catch (ParseException exc) {
-            throw new IllegalArgumentException("Failed to parse timestamp", exc);
-        }
-    }
-}
diff --git a/app/src/main/java/com/bugsnag/android/DeliveryHeaders.kt b/app/src/main/java/com/bugsnag/android/DeliveryHeaders.kt
index cebc83bfc7..89df18055d 100644
--- a/app/src/main/java/com/bugsnag/android/DeliveryHeaders.kt
+++ b/app/src/main/java/com/bugsnag/android/DeliveryHeaders.kt
@@ -1,5 +1,6 @@
 package com.bugsnag.android
 
+import com.bugsnag.android.internal.DateUtils
 import java.io.OutputStream
 import java.security.DigestOutputStream
 import java.security.MessageDigest
diff --git a/app/src/main/java/com/bugsnag/android/NativeInterface.java b/app/src/main/java/com/bugsnag/android/NativeInterface.java
index 45802b55a3..d6d2528542 100644
--- a/app/src/main/java/com/bugsnag/android/NativeInterface.java
+++ b/app/src/main/java/com/bugsnag/android/NativeInterface.java
@@ -430,10 +430,36 @@ public class NativeInterface {
         getClient().setAutoDetectAnrs(autoDetectAnrs);
     }
 
+    public static void startSession() {
+        getClient().startSession();
+    }
+
+    public static void pauseSession() {
+        getClient().pauseSession();
+    }
+
+    public static boolean resumeSession() {
+        return getClient().resumeSession();
+    }
+
+    @Nullable
+    public static Session getCurrentSession() {
+        return getClient().sessionTracker.getCurrentSession();
+    }
+
     /**
      * Marks the launch period as complete
      */
     public static void markLaunchCompleted() {
         getClient().markLaunchCompleted();
     }
+
+    /**
+     * Get the last run info object
+     */
+    @Nullable
+    public static LastRunInfo getLastRunInfo() {
+        return getClient().getLastRunInfo();
+    }
+
 }
diff --git a/app/src/main/java/com/bugsnag/android/Notifier.kt b/app/src/main/java/com/bugsnag/android/Notifier.kt
index 578ec134d9..150a2bbee4 100644
--- a/app/src/main/java/com/bugsnag/android/Notifier.kt
+++ b/app/src/main/java/com/bugsnag/android/Notifier.kt
@@ -7,7 +7,7 @@ import java.io.IOException
  */
 class Notifier @JvmOverloads constructor(
     var name: String = "Android Bugsnag Notifier",
-    var version: String = "5.12.0",
+    var version: String = "5.14.0",
     var url: String = "https://bugsnag.com"
 ) : JsonStream.Streamable {
 
diff --git a/app/src/main/java/com/bugsnag/android/ObjectJsonStreamer.kt b/app/src/main/java/com/bugsnag/android/ObjectJsonStreamer.kt
index 146aba9b65..1e817b22ec 100644
--- a/app/src/main/java/com/bugsnag/android/ObjectJsonStreamer.kt
+++ b/app/src/main/java/com/bugsnag/android/ObjectJsonStreamer.kt
@@ -1,5 +1,6 @@
 package com.bugsnag.android
 
+import com.bugsnag.android.internal.DateUtils
 import java.io.IOException
 import java.lang.reflect.Array
 import java.util.Date
diff --git a/app/src/main/java/com/bugsnag/android/SessionTracker.java b/app/src/main/java/com/bugsnag/android/SessionTracker.java
index 93ec02155a..345d635b0a 100644
--- a/app/src/main/java/com/bugsnag/android/SessionTracker.java
+++ b/app/src/main/java/com/bugsnag/android/SessionTracker.java
@@ -1,7 +1,10 @@
 package com.bugsnag.android;
 
+import com.bugsnag.android.internal.DateUtils;
 import com.bugsnag.android.internal.ImmutableConfig;
 
+import android.os.SystemClock;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
@@ -319,11 +322,11 @@ class SessionTracker extends BaseObservable {
     }
 
     void onActivityStarted(String activityName) {
-        updateForegroundTracker(activityName, true, System.currentTimeMillis());
+        updateForegroundTracker(activityName, true, SystemClock.elapsedRealtime());
     }
 
     void onActivityStopped(String activityName) {
-        updateForegroundTracker(activityName, false, System.currentTimeMillis());
+        updateForegroundTracker(activityName, false, SystemClock.elapsedRealtime());
     }
 
     /**
@@ -349,7 +352,7 @@ class SessionTracker extends BaseObservable {
 
                 if (noActivityRunningForMs >= timeoutMs
                         && configuration.getAutoTrackSessions()) {
-                    startNewSession(new Date(nowMs), client.getUser(), true);
+                    startNewSession(new Date(), client.getUser(), true);
                 }
             }
             foregroundActivities.add(activityName);
diff --git a/app/src/main/java/com/bugsnag/android/StateEvent.kt b/app/src/main/java/com/bugsnag/android/StateEvent.kt
index de6bb3963b..83ba82108e 100644
--- a/app/src/main/java/com/bugsnag/android/StateEvent.kt
+++ b/app/src/main/java/com/bugsnag/android/StateEvent.kt
@@ -9,7 +9,8 @@ sealed class StateEvent { // JvmField allows direct field access optimizations
         @JvmField val buildUuid: String?,
         @JvmField val releaseStage: String?,
         @JvmField val lastRunInfoPath: String,
-        @JvmField val consecutiveLaunchCrashes: Int
+        @JvmField val consecutiveLaunchCrashes: Int,
+        @JvmField val sendThreads: ThreadSendPolicy
     ) : StateEvent()
 
     object DeliverPending : StateEvent()
diff --git a/app/src/main/java/com/bugsnag/android/Thread.java b/app/src/main/java/com/bugsnag/android/Thread.java
index 90daa50e49..d6d5ee73fe 100644
--- a/app/src/main/java/com/bugsnag/android/Thread.java
+++ b/app/src/main/java/com/bugsnag/android/Thread.java
@@ -1,6 +1,7 @@
 package com.bugsnag.android;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 
 import java.io.IOException;
 import java.util.List;
@@ -19,9 +20,10 @@ public class Thread implements JsonStream.Streamable {
             @NonNull String name,
             @NonNull ThreadType type,
             boolean errorReportingThread,
+            @NonNull Thread.State state,
             @NonNull Stacktrace stacktrace,
             @NonNull Logger logger) {
-        this.impl = new ThreadInternal(id, name, type, errorReportingThread, stacktrace);
+        this.impl = new ThreadInternal(id, name, type, errorReportingThread, state, stacktrace);
         this.logger = logger;
     }
 
@@ -81,6 +83,25 @@ public class Thread implements JsonStream.Streamable {
         return impl.getType();
     }
 
+    /**
+     * Sets the state of thread (from {@link java.lang.Thread})
+     */
+    public void setState(@NonNull Thread.State threadState) {
+        if (threadState != null) {
+            impl.setState(threadState);
+        } else {
+            logNull("state");
+        }
+    }
+
+    /**
+     * Gets the state of the thread (from {@link java.lang.Thread})
+     */
+    @NonNull
+    public Thread.State getState() {
+        return impl.getState();
+    }
+
     /**
      * Gets whether the thread was the thread that caused the event
      */
@@ -111,4 +132,79 @@ public class Thread implements JsonStream.Streamable {
     public void toStream(@NonNull JsonStream stream) throws IOException {
         impl.toStream(stream);
     }
+
+    /**
+     * The state of a reported {@link Thread}. These states correspond directly to
+     * {@link java.lang.Thread.State}, except for {@code UNKNOWN} which indicates that
+     * a state could not be captured or mapped.
+     */
+    public enum State {
+        NEW("NEW"),
+        BLOCKED("BLOCKED"),
+        RUNNABLE("RUNNABLE"),
+        TERMINATED("TERMINATED"),
+        TIMED_WAITING("TIMED_WAITING"),
+        WAITING("WAITING"),
+        UNKNOWN("UNKNOWN");
+
+        private final String descriptor;
+
+        State(String descriptor) {
+            this.descriptor = descriptor;
+        }
+
+        @NonNull
+        public String getDescriptor() {
+            return descriptor;
+        }
+
+        @NonNull
+        public static State forThread(@NonNull java.lang.Thread thread) {
+            java.lang.Thread.State state = thread.getState();
+            return getState(state);
+        }
+
+        /**
+         * Lookup the {@code State} for a given {@link #getDescriptor() descriptor} code. Unlike
+         * {@link #valueOf(String) valueOf}, this method will return {@link #UNKNOWN} is no
+         * matching {@code State} constant can be found.
+         *
+         * @param descriptor a consistent descriptor of the state constant to lookup
+         * @return the requested {@link State} or {@link #UNKNOWN}
+         */
+        @NonNull
+        public static State byDescriptor(@Nullable String descriptor) {
+            if (descriptor == null) {
+                return UNKNOWN;
+            }
+
+            for (State state : values()) {
+                if (state.getDescriptor().equals(descriptor)) {
+                    return state;
+                }
+            }
+
+            return UNKNOWN;
+        }
+
+        @NonNull
+        private static State getState(java.lang.Thread.State state) {
+            switch (state) {
+                case NEW:
+                    return NEW;
+                case BLOCKED:
+                    return BLOCKED;
+                case RUNNABLE:
+                    return RUNNABLE;
+                case TERMINATED:
+                    return TERMINATED;
+                case TIMED_WAITING:
+                    return TIMED_WAITING;
+                case WAITING:
+                    return WAITING;
+                default:
+                    return UNKNOWN;
+            }
+        }
+    }
 }
diff --git a/app/src/main/java/com/bugsnag/android/ThreadInternal.kt b/app/src/main/java/com/bugsnag/android/ThreadInternal.kt
index 459c17f87e..efacfb5644 100644
--- a/app/src/main/java/com/bugsnag/android/ThreadInternal.kt
+++ b/app/src/main/java/com/bugsnag/android/ThreadInternal.kt
@@ -7,6 +7,7 @@ class ThreadInternal internal constructor(
     var name: String,
     var type: ThreadType,
     val isErrorReportingThread: Boolean,
+    var state: Thread.State,
     stacktrace: Stacktrace
 ) : JsonStream.Streamable {
 
@@ -18,6 +19,7 @@ class ThreadInternal internal constructor(
         writer.name("id").value(id)
         writer.name("name").value(name)
         writer.name("type").value(type.desc)
+        writer.name("state").value(state.descriptor)
 
         writer.name("stacktrace")
         writer.beginArray()
diff --git a/app/src/main/java/com/bugsnag/android/ThreadState.kt b/app/src/main/java/com/bugsnag/android/ThreadState.kt
index ea27eb92a8..06e00268ac 100644
--- a/app/src/main/java/com/bugsnag/android/ThreadState.kt
+++ b/app/src/main/java/com/bugsnag/android/ThreadState.kt
@@ -67,7 +67,7 @@ internal class ThreadState @Suppress("LongParameterList") @JvmOverloads construc
                 if (trace != null) {
                     val stacktrace = Stacktrace(trace, projectPackages, logger)
                     val errorThread = thread.id == currentThreadId
-                    Thread(thread.id, thread.name, ThreadType.ANDROID, errorThread, stacktrace, logger)
+                    Thread(thread.id, thread.name, ThreadType.ANDROID, errorThread, Thread.State.forThread(thread), stacktrace, logger)
                 } else {
                     null
                 }
diff --git a/app/src/main/java/com/bugsnag/android/internal/DateUtils.kt b/app/src/main/java/com/bugsnag/android/internal/DateUtils.kt
new file mode 100644
index 0000000000..fbcbdd95b0
--- /dev/null
+++ b/app/src/main/java/com/bugsnag/android/internal/DateUtils.kt
@@ -0,0 +1,36 @@
+package com.bugsnag.android.internal
+
+import java.text.DateFormat
+import java.text.ParseException
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+import java.util.TimeZone
+
+object DateUtils {
+    // SimpleDateFormat isn't thread safe, cache one instance per thread as needed.
+    private val iso8601Holder = object : ThreadLocal<DateFormat>() {
+        override fun initialValue(): DateFormat {
+            return SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US).apply {
+                timeZone = TimeZone.getTimeZone("UTC")
+            }
+        }
+    }
+
+    private val iso8601Format: DateFormat
+        get() = requireNotNull(iso8601Holder.get()) { "Unable to find valid dateformatter" }
+
+    @JvmStatic
+    fun toIso8601(date: Date): String {
+        return iso8601Format.format(date)
+    }
+
+    @JvmStatic
+    fun fromIso8601(date: String): Date {
+        return try {
+            iso8601Format.parse(date) ?: throw ParseException("DateFormat.parse returned null", 0)
+        } catch (exc: ParseException) {
+            throw IllegalArgumentException("Failed to parse timestamp", exc)
+        }
+    }
+}
diff --git a/app/src/main/java/com/bugsnag/android/internal/ImmutableConfig.kt b/app/src/main/java/com/bugsnag/android/internal/ImmutableConfig.kt
index 3a5b42c59d..9ace0f6686 100644
--- a/app/src/main/java/com/bugsnag/android/internal/ImmutableConfig.kt
+++ b/app/src/main/java/com/bugsnag/android/internal/ImmutableConfig.kt
@@ -16,7 +16,7 @@ import com.bugsnag.android.EndpointConfiguration
 import com.bugsnag.android.ErrorTypes
 import com.bugsnag.android.EventPayload
 import com.bugsnag.android.Logger
-import com.bugsnag.android.ManifestConfigLoader
+import com.bugsnag.android.ManifestConfigLoader.Companion.BUILD_UUID
 import com.bugsnag.android.NoopLogger
 import com.bugsnag.android.ThreadSendPolicy
 import com.bugsnag.android.errorApiHeaders
@@ -52,7 +52,8 @@ data class ImmutableConfig(
 
     // results cached here to avoid unnecessary lookups in Client.
     val packageInfo: PackageInfo?,
-    val appInfo: ApplicationInfo?
+    val appInfo: ApplicationInfo?,
+    val redactedKeys: Collection<String>
 ) {
 
     @JvmName("getErrorApiDeliveryParams")
@@ -162,7 +163,8 @@ internal fun convertToImmutableConfig(
         persistenceDirectory = persistenceDir,
         sendLaunchCrashesSynchronously = config.sendLaunchCrashesSynchronously,
         packageInfo = packageInfo,
-        appInfo = appInfo
+        appInfo = appInfo,
+        redactedKeys = config.redactedKeys.toSet()
     )
 }
 
@@ -209,7 +211,7 @@ internal fun sanitiseConfiguration(
     }
 
     // populate buildUUID from manifest
-    val buildUuid = appInfo?.metaData?.getString(ManifestConfigLoader.BUILD_UUID)
+    val buildUuid = populateBuildUuid(appInfo)
 
     @Suppress("SENSELESS_COMPARISON")
     if (configuration.delivery == null) {
@@ -224,5 +226,15 @@ internal fun sanitiseConfiguration(
     )
 }
 
+private fun populateBuildUuid(appInfo: ApplicationInfo?): String? {
+    val bundle = appInfo?.metaData
+    return when {
+        bundle?.containsKey(BUILD_UUID) == true -> {
+            bundle.getString(BUILD_UUID) ?: bundle.getInt(BUILD_UUID).toString()
+        }
+        else -> null
+    }
+}
+
 internal const val RELEASE_STAGE_DEVELOPMENT = "development"
 internal const val RELEASE_STAGE_PRODUCTION = "production"