diff --git a/Cargo.toml b/Cargo.toml
index 96104a70..36301036 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -78,7 +78,7 @@ openssl = { version="0.10", optional = true }
 tokio-openssl = { version="0.2", optional = true }
 
 [dependencies.actix]
-#version = "^0.4.6"
+#version = "0.5"
 git = "https://github.com/actix/actix.git"
 
 [dev-dependencies]
diff --git a/examples/diesel/src/db.rs b/examples/diesel/src/db.rs
index 4ca85130..afbf43de 100644
--- a/examples/diesel/src/db.rs
+++ b/examples/diesel/src/db.rs
@@ -17,9 +17,8 @@ pub struct CreateUser {
     pub name: String,
 }
 
-impl ResponseType for CreateUser {
-    type Item = models::User;
-    type Error = Error;
+impl Message for CreateUser {
+    type Result = Result<models::User, Error>;
 }
 
 impl Actor for DbExecutor {
@@ -27,7 +26,7 @@ impl Actor for DbExecutor {
 }
 
 impl Handler<CreateUser> for DbExecutor {
-    type Result = MessageResult<CreateUser>;
+    type Result = Result<models::User, Error>;
 
     fn handle(&mut self, msg: CreateUser, _: &mut Self::Context) -> Self::Result {
         use self::schema::users::dsl::*;
diff --git a/examples/diesel/src/main.rs b/examples/diesel/src/main.rs
index 4c4bc4cd..881cbe1c 100644
--- a/examples/diesel/src/main.rs
+++ b/examples/diesel/src/main.rs
@@ -31,7 +31,7 @@ use db::{CreateUser, DbExecutor};
 
 /// State with DbExecutor address
 struct State {
-    db: SyncAddress<DbExecutor>,
+    db: Addr<Syn<DbExecutor>>,
 }
 
 /// Async request handler
diff --git a/examples/websocket-chat/src/client.rs b/examples/websocket-chat/src/client.rs
index 5da1f37f..4fe18d8e 100644
--- a/examples/websocket-chat/src/client.rs
+++ b/examples/websocket-chat/src/client.rs
@@ -29,7 +29,7 @@ fn main() {
     Arbiter::handle().spawn(
         TcpStream::connect(&addr, Arbiter::handle())
             .and_then(|stream| {
-                let addr: SyncAddress<_> = ChatClient::create(|ctx| {
+                let addr: Addr<Syn<_>> = ChatClient::create(|ctx| {
                     let (r, w) = stream.split();
                     ChatClient::add_stream(FramedRead::new(r, codec::ClientChatCodec), ctx);
                     ChatClient{
diff --git a/examples/websocket-chat/src/codec.rs b/examples/websocket-chat/src/codec.rs
index 718c3c82..03638241 100644
--- a/examples/websocket-chat/src/codec.rs
+++ b/examples/websocket-chat/src/codec.rs
@@ -4,10 +4,9 @@ use serde_json as json;
 use byteorder::{BigEndian , ByteOrder};
 use bytes::{BytesMut, BufMut};
 use tokio_io::codec::{Encoder, Decoder};
-use actix::ResponseType;
 
 /// Client request
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Message)]
 #[serde(tag="cmd", content="data")]
 pub enum ChatRequest {
     /// List rooms
@@ -20,13 +19,8 @@ pub enum ChatRequest {
     Ping
 }
 
-impl ResponseType for ChatRequest {
-    type Item = ();
-    type Error = ();
-}
-
 /// Server response
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Message)]
 #[serde(tag="cmd", content="data")]
 pub enum ChatResponse {
     Ping,
@@ -41,11 +35,6 @@ pub enum ChatResponse {
     Message(String),
 }
 
-impl ResponseType for ChatResponse {
-    type Item = ();
-    type Error = ();
-}
-
 /// Codec for Client -> Server transport
 pub struct ChatCodec;
 
diff --git a/examples/websocket-chat/src/main.rs b/examples/websocket-chat/src/main.rs
index 0252f141..27957f69 100644
--- a/examples/websocket-chat/src/main.rs
+++ b/examples/websocket-chat/src/main.rs
@@ -26,7 +26,7 @@ mod session;
 /// This is our websocket route state, this state is shared with all route instances
 /// via `HttpContext::state()`
 struct WsChatSessionState {
-    addr: SyncAddress<server::ChatServer>,
+    addr: Addr<Syn<server::ChatServer>>,
 }
 
 /// Entry point for our route
@@ -62,12 +62,12 @@ impl Actor for WsChatSession {
         // before processing any other events.
         // HttpContext::state() is instance of WsChatSessionState, state is shared across all
         // routes within application
-        let addr: SyncAddress<_> = ctx.address();
+        let addr: Addr<Syn<_>> = ctx.address();
         ctx.state().addr.call(
-            self, server::Connect{addr: addr.into()}).then(
+            self, server::Connect{addr: addr.subscriber()}).then(
             |res, act, ctx| {
                 match res {
-                    Ok(Ok(res)) => act.id = res,
+                    Ok(res) => act.id = res,
                     // something is wrong with chat server
                     _ => ctx.stop(),
                 }
@@ -111,7 +111,7 @@ impl Handler<ws::Message> for WsChatSession {
                             println!("List rooms");
                             ctx.state().addr.call(self, server::ListRooms).then(|res, _, ctx| {
                                 match res {
-                                    Ok(Ok(rooms)) => {
+                                    Ok(rooms) => {
                                         for room in rooms {
                                             ctx.text(room);
                                         }
@@ -172,8 +172,7 @@ fn main() {
     let sys = actix::System::new("websocket-example");
 
     // Start chat server actor in separate thread
-    let server: SyncAddress<_> =
-        Arbiter::start(|_| server::ChatServer::default());
+    let server: Addr<Syn<_>> = Arbiter::start(|_| server::ChatServer::default());
 
     // Start tcp server in separate thread
     let srv = server.clone();
diff --git a/examples/websocket-chat/src/server.rs b/examples/websocket-chat/src/server.rs
index 477a401b..b38fb460 100644
--- a/examples/websocket-chat/src/server.rs
+++ b/examples/websocket-chat/src/server.rs
@@ -12,18 +12,12 @@ use session;
 /// Message for chat server communications
 
 /// New chat session is created
+#[derive(Message)]
+#[rtype(usize)]
 pub struct Connect {
     pub addr: SyncSubscriber<session::Message>,
 }
 
-/// Response type for Connect message
-///
-/// Chat server returns unique session id
-impl ResponseType for Connect  {
-    type Item = usize;
-    type Error = ();
-}
-
 /// Session is disconnected
 #[derive(Message)]
 pub struct Disconnect {
@@ -44,9 +38,8 @@ pub struct Message {
 /// List of available rooms
 pub struct ListRooms;
 
-impl ResponseType for ListRooms {
-    type Item = Vec<String>;
-    type Error = ();
+impl actix::Message for ListRooms {
+    type Result = Vec<String>;
 }
 
 /// Join room, if room does not exists create new one.
@@ -106,7 +99,7 @@ impl Actor for ChatServer {
 ///
 /// Register new session and assign unique id to this session
 impl Handler<Connect> for ChatServer {
-    type Result = MessageResult<Connect>;
+    type Result = usize;
 
     fn handle(&mut self, msg: Connect, _: &mut Context<Self>) -> Self::Result {
         println!("Someone joined");
@@ -122,7 +115,7 @@ impl Handler<Connect> for ChatServer {
         self.rooms.get_mut(&"Main".to_owned()).unwrap().insert(id);
 
         // send id back
-        Ok(id)
+        id
     }
 }
 
@@ -171,7 +164,7 @@ impl Handler<ListRooms> for ChatServer {
             rooms.push(key.to_owned())
         }
 
-        Ok(rooms)
+        MessageResult(rooms)
     }
 }
 
diff --git a/examples/websocket-chat/src/session.rs b/examples/websocket-chat/src/session.rs
index 29fcb989..50c2701e 100644
--- a/examples/websocket-chat/src/session.rs
+++ b/examples/websocket-chat/src/session.rs
@@ -24,7 +24,7 @@ pub struct ChatSession {
     /// unique session id
     id: usize,
     /// this is address of chat server
-    addr: SyncAddress<ChatServer>,
+    addr: Addr<Syn<ChatServer>>,
     /// Client must send ping at least once per 10 seconds, otherwise we drop connection.
     hb: Instant,
     /// joined room
@@ -45,11 +45,11 @@ impl Actor for ChatSession {
         // register self in chat server. `AsyncContext::wait` register
         // future within context, but context waits until this future resolves
         // before processing any other events.
-        let addr: SyncAddress<_> = ctx.address();
-        self.addr.call(self, server::Connect{addr: addr.into()})
+        let addr: Addr<Syn<_>> = ctx.address();
+        self.addr.call(self, server::Connect{addr: addr.subscriber()})
             .then(|res, act, ctx| {
                 match res {
-                    Ok(Ok(res)) => act.id = res,
+                    Ok(res) => act.id = res,
                     // something is wrong with chat server
                     _ => ctx.stop(),
                 }
@@ -77,7 +77,7 @@ impl StreamHandler<ChatRequest, io::Error> for ChatSession {
                 println!("List rooms");
                 self.addr.call(self, server::ListRooms).then(|res, act, ctx| {
                     match res {
-                        Ok(Ok(rooms)) => {
+                        Ok(rooms) => {
                             act.framed.write(ChatResponse::Rooms(rooms));
                         },
                         _ => println!("Something is wrong"),
@@ -121,7 +121,7 @@ impl Handler<Message> for ChatSession {
 /// Helper methods
 impl ChatSession {
 
-    pub fn new(addr: SyncAddress<ChatServer>,
+    pub fn new(addr: Addr<Syn<ChatServer>>,
                framed: actix::io::FramedWrite<WriteHalf<TcpStream>, ChatCodec>) -> ChatSession {
         ChatSession {id: 0, addr: addr, hb: Instant::now(),
                      room: "Main".to_owned(), framed: framed}
@@ -155,11 +155,11 @@ impl ChatSession {
 /// Define tcp server that will accept incoming tcp connection and create
 /// chat actors.
 pub struct TcpServer {
-    chat: SyncAddress<ChatServer>,
+    chat: Addr<Syn<ChatServer>>,
 }
 
 impl TcpServer {
-    pub fn new(s: &str, chat: SyncAddress<ChatServer>) {
+    pub fn new(s: &str, chat: Addr<Syn<ChatServer>>) {
         // Create server listener
         let addr = net::SocketAddr::from_str("127.0.0.1:12345").unwrap();
         let listener = TcpListener::bind(&addr, Arbiter::handle()).unwrap();
diff --git a/examples/websocket/src/client.rs b/examples/websocket/src/client.rs
index 31fe614d..3eba7277 100644
--- a/examples/websocket/src/client.rs
+++ b/examples/websocket/src/client.rs
@@ -28,7 +28,7 @@ fn main() {
                 ()
             })
             .map(|(reader, writer)| {
-                let addr: SyncAddress<_> = ChatClient::create(|ctx| {
+                let addr: Addr<Syn<_>> = ChatClient::create(|ctx| {
                     ChatClient::add_stream(reader, ctx);
                     ChatClient(writer)
                 });
diff --git a/src/client/connector.rs b/src/client/connector.rs
index 6ecf91f7..2a0466cf 100644
--- a/src/client/connector.rs
+++ b/src/client/connector.rs
@@ -5,7 +5,7 @@ use std::collections::VecDeque;
 use std::time::Duration;
 
 use actix::{fut, Actor, ActorFuture, Arbiter, Context,
-            Handler, Response, ResponseType, Supervised};
+            Handler, Message, ActorResponse, Supervised};
 use actix::registry::ArbiterService;
 use actix::fut::WrapFuture;
 use actix::actors::{Connector, ConnectorError, Connect as ResolveConnect};
@@ -37,9 +37,8 @@ impl Connect {
     }
 }
 
-impl ResponseType for Connect {
-    type Item = Connection;
-    type Error = ClientConnectorError;
+impl Message for Connect {
+    type Result = Result<Connection, ClientConnectorError>;
 }
 
 /// A set of errors that can occur during connecting to a http host
@@ -163,34 +162,34 @@ impl ClientConnector {
 }
 
 impl Handler<Connect> for ClientConnector {
-    type Result = Response<ClientConnector, Connect>;
+    type Result = ActorResponse<ClientConnector, Connection, ClientConnectorError>;
 
     fn handle(&mut self, msg: Connect, _: &mut Self::Context) -> Self::Result {
         let uri = &msg.0;
 
         // host name is required
         if uri.host().is_none() {
-            return Response::reply(Err(ClientConnectorError::InvalidUrl))
+            return ActorResponse::reply(Err(ClientConnectorError::InvalidUrl))
         }
 
         // supported protocols
         let proto = match uri.scheme_part() {
             Some(scheme) => match Protocol::from(scheme.as_str()) {
                 Some(proto) => proto,
-                None => return Response::reply(Err(ClientConnectorError::InvalidUrl)),
+                None => return ActorResponse::reply(Err(ClientConnectorError::InvalidUrl)),
             },
-            None => return Response::reply(Err(ClientConnectorError::InvalidUrl)),
+            None => return ActorResponse::reply(Err(ClientConnectorError::InvalidUrl)),
         };
 
         // check ssl availability
         if proto.is_secure() && !HAS_OPENSSL { //&& !HAS_TLS {
-            return Response::reply(Err(ClientConnectorError::SslIsNotSupported))
+            return ActorResponse::reply(Err(ClientConnectorError::SslIsNotSupported))
         }
 
         let host = uri.host().unwrap().to_owned();
         let port = uri.port().unwrap_or_else(|| proto.port());
 
-        Response::async_reply(
+        ActorResponse::async(
             Connector::from_registry()
                 .call(self, ResolveConnect::host_and_port(&host, port))
                 .map_err(|_, _, _| ClientConnectorError::Disconnected)
diff --git a/src/context.rs b/src/context.rs
index 28cf5d7d..7603ea05 100644
--- a/src/context.rs
+++ b/src/context.rs
@@ -1,4 +1,4 @@
-use std;
+use std::mem;
 use std::marker::PhantomData;
 use futures::{Async, Future, Poll};
 use futures::sync::oneshot::Sender;
@@ -6,7 +6,7 @@ use futures::unsync::oneshot;
 use smallvec::SmallVec;
 
 use actix::{Actor, ActorState, ActorContext, AsyncContext,
-            Addr, Handler, ResponseType, MessageResult, SpawnHandle, Syn, Unsync};
+            Addr, Handler, Message, SpawnHandle, Syn, Unsync};
 use actix::fut::ActorFuture;
 use actix::dev::{ContextImpl, ToEnvelope, RemoteEnvelope};
 
@@ -184,7 +184,7 @@ impl<A, S> ActorHttpContext for HttpContext<A, S> where A: Actor<Context=Self>,
 
     fn poll(&mut self) -> Poll<Option<SmallVec<[Frame; 4]>>, Error> {
         let ctx: &mut HttpContext<A, S> = unsafe {
-            std::mem::transmute(self as &mut HttpContext<A, S>)
+            mem::transmute(self as &mut HttpContext<A, S>)
         };
 
         if self.inner.alive() {
@@ -207,9 +207,9 @@ impl<A, S> ActorHttpContext for HttpContext<A, S> where A: Actor<Context=Self>,
 
 impl<A, M, S> ToEnvelope<Syn<A>, M> for HttpContext<A, S>
     where A: Actor<Context=HttpContext<A, S>> + Handler<M>,
-          M: ResponseType + Send + 'static, M::Item: Send, M::Error: Send,
+          M: Message + Send + 'static, M::Result: Send,
 {
-    fn pack(msg: M, tx: Option<Sender<MessageResult<M>>>) -> Syn<A> {
+    fn pack(msg: M, tx: Option<Sender<M::Result>>) -> Syn<A> {
         Syn::new(Box::new(RemoteEnvelope::envelope(msg, tx)))
     }
 }
diff --git a/src/server/mod.rs b/src/server/mod.rs
index 39df2fc8..1a7b846b 100644
--- a/src/server/mod.rs
+++ b/src/server/mod.rs
@@ -2,6 +2,7 @@
 use std::{time, io};
 use std::net::Shutdown;
 
+use actix;
 use futures::Poll;
 use tokio_io::{AsyncRead, AsyncWrite};
 use tokio_core::net::TcpStream;
@@ -43,11 +44,14 @@ pub struct ResumeServer;
 /// Stop incoming connection processing, stop all workers and exit.
 ///
 /// If server starts with `spawn()` method, then spawned thread get terminated.
-#[derive(Message)]
 pub struct StopServer {
     pub graceful: bool
 }
 
+impl actix::Message for StopServer {
+    type Result = Result<(), ()>;
+}
+
 /// Low level http request handler
 #[allow(unused_variables)]
 pub trait HttpHandler: 'static {
diff --git a/src/server/srv.rs b/src/server/srv.rs
index 3cd6da12..4217ad5a 100644
--- a/src/server/srv.rs
+++ b/src/server/srv.rs
@@ -352,7 +352,7 @@ impl<H: IntoHttpHandler> HttpServer<H>
             let signals = self.subscribe_to_signals();
             let addr: SyncAddress<_> = Actor::start(self);
             signals.map(|signals| signals.send(
-                signal::Subscribe(addr.clone().into())));
+                signal::Subscribe(addr.clone().subscriber())));
             Ok(addr)
         }
     }
@@ -396,7 +396,7 @@ impl<H: IntoHttpHandler> HttpServer<H>
             let signals = self.subscribe_to_signals();
             let addr: SyncAddress<_> = Actor::start(self);
             signals.map(|signals| signals.send(
-                signal::Subscribe(addr.clone().into())));
+                signal::Subscribe(addr.clone().subscriber())));
             Ok(addr)
         }
     }
@@ -477,24 +477,6 @@ impl<H: IntoHttpHandler> Handler<signal::Signal> for HttpServer<H>
     }
 }
 
-impl<T, H> Handler<io::Result<Conn<T>>> for HttpServer<H>
-    where T: IoStream,
-          H: IntoHttpHandler,
-{
-    type Result = ();
-
-    fn handle(&mut self, msg: io::Result<Conn<T>>, _: &mut Context<Self>) -> Self::Result {
-        match msg {
-            Ok(msg) =>
-                Arbiter::handle().spawn(
-                    HttpChannel::new(
-                        Rc::clone(self.h.as_ref().unwrap()), msg.io, msg.peer, msg.http2)),
-            Err(err) =>
-                debug!("Error handling request: {}", err),
-        }
-    }
-}
-
 impl<T, H> Handler<Conn<T>> for HttpServer<H>
     where T: IoStream,
           H: IntoHttpHandler,
@@ -535,7 +517,7 @@ impl<H: IntoHttpHandler> Handler<ResumeServer> for HttpServer<H>
 
 impl<H: IntoHttpHandler> Handler<StopServer> for HttpServer<H>
 {
-    type Result = actix::Response<Self, StopServer>;
+    type Result = actix::Response<(), ()>;
 
     fn handle(&mut self, msg: StopServer, ctx: &mut Context<Self>) -> Self::Result {
         // stop accept threads
@@ -570,8 +552,8 @@ impl<H: IntoHttpHandler> Handler<StopServer> for HttpServer<H>
         }
 
         if !self.workers.is_empty() {
-            Response::async_reply(
-                rx.into_future().map(|_| ()).map_err(|_| ()).actfuture())
+            Response::async(
+                rx.into_future().map(|_| ()).map_err(|_| ()))
         } else {
             // we need to stop system if server was spawned
             if self.exit {
diff --git a/src/server/worker.rs b/src/server/worker.rs
index 6ee48e2d..34c5324f 100644
--- a/src/server/worker.rs
+++ b/src/server/worker.rs
@@ -37,12 +37,14 @@ pub(crate) struct Conn<T> {
 
 /// Stop worker message. Returns `true` on successful shutdown
 /// and `false` if some connections still alive.
-#[derive(Message)]
-#[rtype(bool)]
 pub(crate) struct StopWorker {
     pub graceful: Option<time::Duration>,
 }
 
+impl Message for StopWorker {
+    type Result = Result<bool, ()>;
+}
+
 /// Http worker
 ///
 /// Worker accepts Socket objects via unbounded channel and start requests processing.
@@ -117,7 +119,7 @@ impl<H> Handler<Conn<net::TcpStream>> for Worker<H>
 impl<H> Handler<StopWorker> for Worker<H>
     where H: HttpHandler + 'static,
 {
-    type Result = Response<Self, StopWorker>;
+    type Result = Response<bool, ()>;
 
     fn handle(&mut self, msg: StopWorker, ctx: &mut Context<Self>) -> Self::Result {
         let num = self.settings.num_channels();
@@ -128,7 +130,7 @@ impl<H> Handler<StopWorker> for Worker<H>
             info!("Graceful http worker shutdown, {} connections", num);
             let (tx, rx) = oneshot::channel();
             self.shutdown_timeout(ctx, tx, dur);
-            Response::async_reply(rx.map_err(|_| ()).actfuture())
+            Response::async(rx.map_err(|_| ()))
         } else {
             info!("Force shutdown http worker, {} connections", num);
             self.settings.head().traverse::<TcpStream, H>();
diff --git a/src/ws/context.rs b/src/ws/context.rs
index 1eb78c7e..6792e51c 100644
--- a/src/ws/context.rs
+++ b/src/ws/context.rs
@@ -5,7 +5,7 @@ use futures::unsync::oneshot;
 use smallvec::SmallVec;
 
 use actix::{Actor, ActorState, ActorContext, AsyncContext,
-            Addr, Handler, ResponseType, SpawnHandle, MessageResult, Syn, Unsync};
+            Addr, Handler, Message, Syn, Unsync, SpawnHandle};
 use actix::fut::ActorFuture;
 use actix::dev::{ContextImpl, ToEnvelope, RemoteEnvelope};
 
@@ -219,9 +219,9 @@ impl<A, S> ActorHttpContext for WebsocketContext<A, S> where A: Actor<Context=Se
 
 impl<A, M, S> ToEnvelope<Syn<A>, M> for WebsocketContext<A, S>
     where A: Actor<Context=WebsocketContext<A, S>> + Handler<M>,
-          M: ResponseType + Send + 'static, M::Item: Send, M::Error: Send,
+          M: Message + Send + 'static, M::Result: Send
 {
-    fn pack(msg: M, tx: Option<Sender<MessageResult<M>>>) -> Syn<A> {
+    fn pack(msg: M, tx: Option<Sender<M::Result>>) -> Syn<A> {
         Syn::new(Box::new(RemoteEnvelope::envelope(msg, tx)))
     }
 }
diff --git a/src/ws/mod.rs b/src/ws/mod.rs
index 07b845cc..d9bf0f10 100644
--- a/src/ws/mod.rs
+++ b/src/ws/mod.rs
@@ -47,7 +47,7 @@ use bytes::BytesMut;
 use http::{Method, StatusCode, header};
 use futures::{Async, Poll, Stream};
 
-use actix::{Actor, AsyncContext, ResponseType, Handler};
+use actix::{Actor, AsyncContext, Handler};
 
 use body::Binary;
 use payload::ReadAny;
@@ -74,7 +74,7 @@ const SEC_WEBSOCKET_VERSION: &str = "SEC-WEBSOCKET-VERSION";
 
 
 /// `WebSocket` Message
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Message)]
 pub enum Message {
     Text(String),
     Binary(Binary),
@@ -85,11 +85,6 @@ pub enum Message {
     Error
 }
 
-impl ResponseType for Message {
-    type Item = ();
-    type Error = ();
-}
-
 /// Do websocket handshake and start actor
 pub fn start<A, S>(mut req: HttpRequest<S>, actor: A) -> Result<HttpResponse, Error>
     where A: Actor<Context=WebsocketContext<A, S>> + Handler<Message>,