diff --git a/waku/v2/protocol/filter/filter_test.go b/waku/v2/protocol/filter/filter_test.go
index 68a70a82f..f1b9b8d4b 100644
--- a/waku/v2/protocol/filter/filter_test.go
+++ b/waku/v2/protocol/filter/filter_test.go
@@ -97,7 +97,7 @@ func (s *FilterTestSuite) makeWakuFilterFullNode(topic string) (*relay.WakuRelay
 
 	node2Filter := NewWakuFilterFullNode(timesource.NewDefaultClock(), prometheus.DefaultRegisterer, s.log)
 	node2Filter.SetHost(host)
-	sub := broadcaster.Register(topic)
+	sub := broadcaster.Register(protocol.NewContentFilter(topic))
 	err := node2Filter.Start(s.ctx, sub)
 	s.Require().NoError(err)
 
diff --git a/waku/v2/protocol/legacy_filter/waku_filter_test.go b/waku/v2/protocol/legacy_filter/waku_filter_test.go
index 023d189c1..beb29f10d 100644
--- a/waku/v2/protocol/legacy_filter/waku_filter_test.go
+++ b/waku/v2/protocol/legacy_filter/waku_filter_test.go
@@ -82,7 +82,7 @@ func TestWakuFilter(t *testing.T) {
 
 	node2Filter := NewWakuFilter(broadcaster, true, timesource.NewDefaultClock(), prometheus.DefaultRegisterer, utils.Logger())
 	node2Filter.SetHost(host2)
-	sub := broadcaster.Register(testTopic)
+	sub := broadcaster.Register(protocol.NewContentFilter(testTopic))
 	err := node2Filter.Start(ctx, sub)
 	require.NoError(t, err)
 
@@ -170,7 +170,7 @@ func TestWakuFilterPeerFailure(t *testing.T) {
 	require.NoError(t, broadcaster2.Start(context.Background()))
 	node2Filter := NewWakuFilter(broadcaster2, true, timesource.NewDefaultClock(), prometheus.DefaultRegisterer, utils.Logger(), WithTimeout(3*time.Second))
 	node2Filter.SetHost(host2)
-	sub := broadcaster.Register(testTopic)
+	sub := broadcaster.Register(protocol.NewContentFilter(testTopic))
 	err := node2Filter.Start(ctx, sub)
 	require.NoError(t, err)
 
diff --git a/waku/v2/protocol/relay/broadcast.go b/waku/v2/protocol/relay/broadcast.go
index aea85e267..d201b467f 100644
--- a/waku/v2/protocol/relay/broadcast.go
+++ b/waku/v2/protocol/relay/broadcast.go
@@ -7,31 +7,32 @@ import (
 	"sync/atomic"
 
 	"github.com/waku-org/go-waku/waku/v2/protocol"
+	"golang.org/x/exp/slices"
 )
 
-type chStore struct {
+type subscriptions struct {
 	mu           sync.RWMutex
-	topicToChans map[string]map[int]chan *protocol.Envelope
+	topicsToSubs map[string]map[int]*Subscription //map of pubSubTopic to subscriptions
 	id           int
 }
 
-func newChStore() chStore {
-	return chStore{
-		topicToChans: make(map[string]map[int]chan *protocol.Envelope),
+func newSubStore() subscriptions {
+	return subscriptions{
+		topicsToSubs: make(map[string]map[int]*Subscription),
 	}
 }
-func (s *chStore) getNewCh(topic string, chLen int) Subscription {
+func (s *subscriptions) getNewSubscription(contentFilter protocol.ContentFilter, chLen int) Subscription {
 	ch := make(chan *protocol.Envelope, chLen)
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	s.id++
-	//
-	if s.topicToChans[topic] == nil {
-		s.topicToChans[topic] = make(map[int]chan *protocol.Envelope)
+	pubsubTopic := contentFilter.PubsubTopic
+	if s.topicsToSubs[pubsubTopic] == nil {
+		s.topicsToSubs[pubsubTopic] = make(map[int]*Subscription)
 	}
 	id := s.id
-	s.topicToChans[topic][id] = ch
-	return Subscription{
+	sub := Subscription{
+		ID: id,
 		// read only channel,will not block forever, returns once closed.
 		Ch: ch,
 		// Unsubscribe function is safe, can be called multiple times
@@ -39,21 +40,25 @@ func (s *chStore) getNewCh(topic string, chLen int) Subscription {
 		Unsubscribe: func() {
 			s.mu.Lock()
 			defer s.mu.Unlock()
-			if s.topicToChans[topic] == nil {
+			if s.topicsToSubs[pubsubTopic] == nil {
 				return
 			}
-			if ch := s.topicToChans[topic][id]; ch != nil {
-				close(ch)
-				delete(s.topicToChans[topic], id)
+			if sub := s.topicsToSubs[pubsubTopic][id]; sub != nil {
+				close(sub.Ch)
+				delete(s.topicsToSubs[pubsubTopic], id)
 			}
 		},
+		contentFilter: contentFilter,
 	}
+	s.topicsToSubs[pubsubTopic][id] = &sub
+	return sub
 }
 
-func (s *chStore) broadcast(ctx context.Context, m *protocol.Envelope) {
+func (s *subscriptions) broadcast(ctx context.Context, m *protocol.Envelope) {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
-	for _, ch := range s.topicToChans[m.PubsubTopic()] {
+	for _, sub := range s.topicsToSubs[m.PubsubTopic()] {
+
 		select {
 		// using ctx.Done for returning on cancellation is needed
 		// reason:
@@ -62,35 +67,43 @@ func (s *chStore) broadcast(ctx context.Context, m *protocol.Envelope) {
 		// this will also block the chStore close function as it uses same mutex
 		case <-ctx.Done():
 			return
-		case ch <- m:
+		default:
+			//Filter and notify only
+			// - if contentFilter doesn't have a contentTopic
+			// - if contentFilter has contentTopics and it matches with message
+			if len(sub.contentFilter.ContentTopicsList()) == 0 || (len(sub.contentFilter.ContentTopicsList()) > 0 &&
+				slices.Contains[string](sub.contentFilter.ContentTopicsList(), m.Message().ContentTopic)) {
+				sub.Ch <- m
+			}
 		}
 	}
-	// send to all registered subscribers
-	for _, ch := range s.topicToChans[""] {
+
+	// send to all wildcard subscribers
+	for _, sub := range s.topicsToSubs[""] {
 		select {
 		case <-ctx.Done():
 			return
-		case ch <- m:
+		case sub.Ch <- m:
 		}
 	}
 }
 
-func (s *chStore) close() {
+func (s *subscriptions) close() {
 	s.mu.Lock()
 	defer s.mu.Unlock()
-	for _, chans := range s.topicToChans {
-		for _, ch := range chans {
-			close(ch)
+	for _, subs := range s.topicsToSubs {
+		for _, sub := range subs {
+			close(sub.Ch)
 		}
 	}
-	s.topicToChans = nil
+	s.topicsToSubs = nil
 }
 
 // Broadcaster is used to create a fanout for an envelope that will be received by any subscriber interested in the topic of the message
 type Broadcaster interface {
 	Start(ctx context.Context) error
 	Stop()
-	Register(topic string, chLen ...int) Subscription
+	Register(contentFilter protocol.ContentFilter, chLen ...int) Subscription
 	RegisterForAll(chLen ...int) Subscription
 	Submit(*protocol.Envelope)
 }
@@ -106,7 +119,7 @@ type broadcaster struct {
 	cancel context.CancelFunc
 	input  chan *protocol.Envelope
 	//
-	chStore chStore
+	chStore subscriptions
 	running atomic.Bool
 }
 
@@ -124,7 +137,7 @@ func (b *broadcaster) Start(ctx context.Context) error {
 	}
 	ctx, cancel := context.WithCancel(ctx)
 	b.cancel = cancel
-	b.chStore = newChStore()
+	b.chStore = newSubStore()
 	b.input = make(chan *protocol.Envelope, b.bufLen)
 	go b.run(ctx)
 	return nil
@@ -154,15 +167,14 @@ func (b *broadcaster) Stop() {
 	close(b.input)    // close input channel
 }
 
-// Register returns a subscription for an specific topic
-func (b *broadcaster) Register(topic string, chLen ...int) Subscription {
-	return b.chStore.getNewCh(topic, getChLen(chLen))
+// Register returns a subscription for an specific pubsub topic and/or list of contentTopics
+func (b *broadcaster) Register(contentFilter protocol.ContentFilter, chLen ...int) Subscription {
+	return b.chStore.getNewSubscription(contentFilter, getChLen(chLen))
 }
 
 // RegisterForAll returns a subscription for all topics
 func (b *broadcaster) RegisterForAll(chLen ...int) Subscription {
-
-	return b.chStore.getNewCh("", getChLen(chLen))
+	return b.chStore.getNewSubscription(protocol.NewContentFilter(""), getChLen(chLen))
 }
 
 func getChLen(chLen []int) int {
diff --git a/waku/v2/protocol/relay/broadcast_test.go b/waku/v2/protocol/relay/broadcast_test.go
index 59bd26b93..55422d228 100644
--- a/waku/v2/protocol/relay/broadcast_test.go
+++ b/waku/v2/protocol/relay/broadcast_test.go
@@ -46,7 +46,7 @@ func TestBroadcastSpecificTopic(t *testing.T) {
 	for i := 0; i < 5; i++ {
 		wg.Add(1)
 
-		sub := b.Register("abc")
+		sub := b.Register(protocol.NewContentFilter("abc"))
 
 		go func() {
 			defer wg.Done()
@@ -66,7 +66,7 @@ func TestBroadcastSpecificTopic(t *testing.T) {
 func TestBroadcastCleanup(t *testing.T) {
 	b := NewBroadcaster(100)
 	require.NoError(t, b.Start(context.Background()))
-	sub := b.Register("test")
+	sub := b.Register(protocol.NewContentFilter("test"))
 	b.Stop()
 	<-sub.Ch
 	sub.Unsubscribe()
@@ -78,7 +78,7 @@ func TestBroadcastUnregisterSub(t *testing.T) {
 	require.NoError(t, b.Start(context.Background()))
 	subForAll := b.RegisterForAll()
 	// unregister before submit
-	specificSub := b.Register("abc")
+	specificSub := b.Register(protocol.NewContentFilter("abc"))
 	specificSub.Unsubscribe()
 	//
 	env := protocol.NewEnvelope(&pb.WakuMessage{}, utils.GetUnixEpoch(), "abc")
diff --git a/waku/v2/protocol/relay/subscription.go b/waku/v2/protocol/relay/subscription.go
index 670d6295b..b4720f3ae 100644
--- a/waku/v2/protocol/relay/subscription.go
+++ b/waku/v2/protocol/relay/subscription.go
@@ -4,6 +4,7 @@ import "github.com/waku-org/go-waku/waku/v2/protocol"
 
 // Subscription handles the details of a particular Topic subscription. There may be many subscriptions for a given topic.
 type Subscription struct {
+	ID            int
 	Unsubscribe   func()
 	Ch            chan *protocol.Envelope
 	contentFilter protocol.ContentFilter
diff --git a/waku/v2/protocol/relay/waku_relay.go b/waku/v2/protocol/relay/waku_relay.go
index 1e959320c..6a2ae05af 100644
--- a/waku/v2/protocol/relay/waku_relay.go
+++ b/waku/v2/protocol/relay/waku_relay.go
@@ -99,7 +99,8 @@ func msgIDFn(pmsg *pubsub_pb.Message) string {
 }
 
 // NewWakuRelay returns a new instance of a WakuRelay struct
-func NewWakuRelay(bcaster Broadcaster, minPeersToPublish int, timesource timesource.Timesource, reg prometheus.Registerer, log *zap.Logger, opts ...pubsub.Option) *WakuRelay {
+func NewWakuRelay(bcaster Broadcaster, minPeersToPublish int, timesource timesource.Timesource,
+	reg prometheus.Registerer, log *zap.Logger, opts ...pubsub.Option) *WakuRelay {
 	w := new(WakuRelay)
 	w.timesource = timesource
 	w.wakuRelayTopics = make(map[string]*pubsub.Topic)
@@ -232,6 +233,9 @@ func (w *WakuRelay) Start(ctx context.Context) error {
 }
 
 func (w *WakuRelay) start() error {
+	if w.bcaster == nil {
+		return fmt.Errorf("broadcaster not specified for relay")
+	}
 	ps, err := pubsub.NewGossipSub(w.Context(), w.host, w.opts...)
 	if err != nil {
 		return err
@@ -429,16 +433,14 @@ func (w *WakuRelay) subscribe(ctx context.Context, contentFilter waku_proto.Cont
 			if err != nil {
 				return nil, err
 			}
-			/* TODO: Analyze what to do with this
-						if w.bcaster != nil {
-				_ = w.bcaster.Register(contentFilter.PubsubTopic, 1024)
-			} */
+
+			subscription := w.bcaster.Register(contentFilter, 1024)
+
 			// Create Content subscription
-			subscription := NewSubscription(contentFilter)
 			w.topicsMutex.RLock()
-			w.contentSubs[pubSubTopic] = subscription
+			w.contentSubs[pubSubTopic] = &subscription
 			w.topicsMutex.RUnlock()
-			subscriptions = append(subscriptions, subscription)
+			subscriptions = append(subscriptions, &subscription)
 			go func() {
 				<-ctx.Done()
 				subscription.Unsubscribe()
@@ -511,7 +513,9 @@ func (w *WakuRelay) Unsubscribe(ctx context.Context, contentFilter waku_proto.Co
 			w.relaySubs[pubSubTopic].Cancel()
 			delete(w.relaySubs, pubSubTopic)
 
-			//TODO: Any cancellation to be done?
+			//TODO: Unregister all subs from broadcaster
+			//cSub.Unsubscribe()
+
 			delete(w.contentSubs, pubSubTopic)
 
 			evtHandler, ok := w.topicEvtHanders[pubSubTopic]
@@ -579,9 +583,8 @@ func (w *WakuRelay) topicMsgHandler(pubsubTopic string, sub *pubsub.Subscription
 
 			w.metrics.RecordMessage(envelope)
 
-			if w.bcaster != nil {
-				w.bcaster.Submit(envelope)
-			}
+			w.bcaster.Submit(envelope)
+
 			//Notify to all subscriptions for this topic
 			sub, ok := w.contentSubs[pubsubTopic]
 			if ok {
diff --git a/waku/v2/protocol/relay/waku_relay_test.go b/waku/v2/protocol/relay/waku_relay_test.go
index 45dc6c884..44511121b 100644
--- a/waku/v2/protocol/relay/waku_relay_test.go
+++ b/waku/v2/protocol/relay/waku_relay_test.go
@@ -27,15 +27,15 @@ func TestWakuRelay(t *testing.T) {
 
 	host, err := tests.MakeHost(context.Background(), port, rand.Reader)
 	require.NoError(t, err)
-	//bcaster := NewBroadcaster(10)
-	relay := NewWakuRelay(nil, 0, timesource.NewDefaultClock(), prometheus.DefaultRegisterer, utils.Logger())
+	bcaster := NewBroadcaster(10)
+	relay := NewWakuRelay(bcaster, 0, timesource.NewDefaultClock(), prometheus.DefaultRegisterer, utils.Logger())
 	relay.SetHost(host)
 	err = relay.Start(context.Background())
 	require.NoError(t, err)
 
-	//err = bcaster.Start(context.Background())
+	err = bcaster.Start(context.Background())
 	require.NoError(t, err)
-	defer relay.Stop()
+	//defer relay.Stop()
 
 	subs, err := relay.subscribe(context.Background(), protocol.NewContentFilter(testTopic))
 	//sub := bcaster.Register(testTopic)
@@ -70,7 +70,6 @@ func TestWakuRelay(t *testing.T) {
 
 	err = relay.Unsubscribe(ctx, protocol.NewContentFilter(testTopic))
 	require.NoError(t, err)
-
 	<-ctx.Done()
 }
 
@@ -79,9 +78,10 @@ func createRelayNode(t *testing.T) (host.Host, *WakuRelay) {
 	require.NoError(t, err)
 	host, err := tests.MakeHost(context.Background(), port, rand.Reader)
 	require.NoError(t, err)
-
-	relay := NewWakuRelay(nil, 0, timesource.NewDefaultClock(), prometheus.DefaultRegisterer, utils.Logger())
+	bcaster := NewBroadcaster(10)
+	relay := NewWakuRelay(bcaster, 0, timesource.NewDefaultClock(), prometheus.DefaultRegisterer, utils.Logger())
 	relay.SetHost(host)
+	bcaster.Start(context.Background())
 	return host, relay
 }