diff --git a/VERSION b/VERSION
index ae02209bb..8f63f4f9a 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.90.0
+0.91.0
diff --git a/eth-node/types/envelopes.go b/eth-node/types/envelopes.go
index 62c22ba95..7e5283fbc 100644
--- a/eth-node/types/envelopes.go
+++ b/eth-node/types/envelopes.go
@@ -28,7 +28,7 @@ const (
 	// And event, ideally, should contain information about peer that sent envelope to us.
 	EventEnvelopeReceived EventType = "envelope.received"
 	// EventBatchAcknowledged is sent when batch of envelopes was acknowledged by a peer.
-	EventBatchAcknowledged EventType = "batch.acknowleged"
+	EventBatchAcknowledged EventType = "batch.acknowledged"
 	// EventEnvelopeAvailable fires when envelop is available for filters
 	EventEnvelopeAvailable EventType = "envelope.available"
 	// EventMailServerRequestSent fires when such request is sent.
diff --git a/protocol/transport/envelopes_monitor.go b/protocol/transport/envelopes_monitor.go
index f65215f95..7ecc2d698 100644
--- a/protocol/transport/envelopes_monitor.go
+++ b/protocol/transport/envelopes_monitor.go
@@ -23,11 +23,11 @@ const (
 )
 
 type EnvelopesMonitorConfig struct {
-	EnvelopeEventsHandler          EnvelopeEventsHandler
-	MaxAttempts                    int
-	MailserverConfirmationsEnabled bool
-	IsMailserver                   func(types.EnodeID) bool
-	Logger                         *zap.Logger
+	EnvelopeEventsHandler            EnvelopeEventsHandler
+	MaxAttempts                      int
+	AwaitOnlyMailServerConfirmations bool
+	IsMailserver                     func(types.EnodeID) bool
+	Logger                           *zap.Logger
 }
 
 // EnvelopeEventsHandler used for two different event types.
@@ -52,13 +52,13 @@ func NewEnvelopesMonitor(w types.Waku, config EnvelopesMonitorConfig) *Envelopes
 	}
 
 	return &EnvelopesMonitor{
-		w:                      w,
-		api:                    api,
-		handler:                config.EnvelopeEventsHandler,
-		mailServerConfirmation: config.MailserverConfirmationsEnabled,
-		maxAttempts:            config.MaxAttempts,
-		isMailserver:           config.IsMailserver,
-		logger:                 logger.With(zap.Namespace("EnvelopesMonitor")),
+		w:                                w,
+		api:                              api,
+		handler:                          config.EnvelopeEventsHandler,
+		awaitOnlyMailServerConfirmations: config.AwaitOnlyMailServerConfirmations,
+		maxAttempts:                      config.MaxAttempts,
+		isMailserver:                     config.IsMailserver,
+		logger:                           logger.With(zap.Namespace("EnvelopesMonitor")),
 
 		// key is envelope hash (event.Hash)
 		envelopes:   map[types.Hash]EnvelopeState{},
@@ -73,11 +73,10 @@ func NewEnvelopesMonitor(w types.Waku, config EnvelopesMonitorConfig) *Envelopes
 
 // EnvelopesMonitor is responsible for monitoring waku envelopes state.
 type EnvelopesMonitor struct {
-	w                      types.Waku
-	api                    types.PublicWakuAPI
-	handler                EnvelopeEventsHandler
-	mailServerConfirmation bool
-	maxAttempts            int
+	w           types.Waku
+	api         types.PublicWakuAPI
+	handler     EnvelopeEventsHandler
+	maxAttempts int
 
 	mu        sync.Mutex
 	envelopes map[types.Hash]EnvelopeState
@@ -87,6 +86,8 @@ type EnvelopesMonitor struct {
 	attempts    map[types.Hash]int
 	identifiers map[types.Hash][][]byte
 
+	awaitOnlyMailServerConfirmations bool
+
 	wg           sync.WaitGroup
 	quit         chan struct{}
 	isMailserver func(peer types.EnodeID) bool
@@ -164,7 +165,7 @@ func (m *EnvelopesMonitor) handleEvent(event types.EnvelopeEvent) {
 
 func (m *EnvelopesMonitor) handleEventEnvelopeSent(event types.EnvelopeEvent) {
 	// Mailserver confirmations for WakuV2 are disabled
-	if (m.w == nil || m.w.Version() < 2) && m.mailServerConfirmation {
+	if (m.w == nil || m.w.Version() < 2) && m.awaitOnlyMailServerConfirmations {
 		if !m.isMailserver(event.Peer) {
 			return
 		}
@@ -181,25 +182,20 @@ func (m *EnvelopesMonitor) handleEventEnvelopeSent(event types.EnvelopeEvent) {
 		return
 	}
 	m.logger.Debug("envelope is sent", zap.String("hash", event.Hash.String()), zap.String("peer", event.Peer.String()))
-	if event.Batch != (types.Hash{}) {
+	confirmationExpected := event.Batch != (types.Hash{})
+	if confirmationExpected {
 		if _, ok := m.batches[event.Batch]; !ok {
 			m.batches[event.Batch] = map[types.Hash]struct{}{}
 		}
 		m.batches[event.Batch][event.Hash] = struct{}{}
 		m.logger.Debug("waiting for a confirmation", zap.String("batch", event.Batch.String()))
-	} else {
-		m.envelopes[event.Hash] = EnvelopeSent
-		if m.handler != nil {
-			m.handler.EnvelopeSent(m.identifiers[event.Hash])
-		}
 	}
 }
 
 func (m *EnvelopesMonitor) handleAcknowledgedBatch(event types.EnvelopeEvent) {
-	if m.mailServerConfirmation {
-		if !m.isMailserver(event.Peer) {
-			return
-		}
+
+	if m.awaitOnlyMailServerConfirmations && !m.isMailserver(event.Peer) {
+		return
 	}
 
 	m.mu.Lock()
@@ -291,10 +287,8 @@ func (m *EnvelopesMonitor) handleEnvelopeFailure(hash types.Hash, err error) {
 }
 
 func (m *EnvelopesMonitor) handleEventEnvelopeReceived(event types.EnvelopeEvent) {
-	if m.mailServerConfirmation {
-		if !m.isMailserver(event.Peer) {
-			return
-		}
+	if m.awaitOnlyMailServerConfirmations && !m.isMailserver(event.Peer) {
+		return
 	}
 	m.mu.Lock()
 	defer m.mu.Unlock()
diff --git a/protocol/transport/envelopes_monitor_test.go b/protocol/transport/envelopes_monitor_test.go
index c93ede598..c3862ca7a 100644
--- a/protocol/transport/envelopes_monitor_test.go
+++ b/protocol/transport/envelopes_monitor_test.go
@@ -32,16 +32,16 @@ func (s *EnvelopesMonitorSuite) SetupTest() {
 	s.monitor = NewEnvelopesMonitor(
 		nil,
 		EnvelopesMonitorConfig{
-			EnvelopeEventsHandler:          nil,
-			MaxAttempts:                    0,
-			MailserverConfirmationsEnabled: false,
-			IsMailserver:                   func(types.EnodeID) bool { return false },
-			Logger:                         zap.NewNop(),
+			EnvelopeEventsHandler:            nil,
+			MaxAttempts:                      0,
+			AwaitOnlyMailServerConfirmations: false,
+			IsMailserver:                     func(types.EnodeID) bool { return false },
+			Logger:                           zap.NewNop(),
 		},
 	)
 }
 
-func (s *EnvelopesMonitorSuite) TestConfirmed() {
+func (s *EnvelopesMonitorSuite) TestEnvelopePosted() {
 	s.monitor.Add(testIDs, testHash, types.NewMessage{})
 	s.Contains(s.monitor.envelopes, testHash)
 	s.Equal(EnvelopePosted, s.monitor.envelopes[testHash])
@@ -50,7 +50,7 @@ func (s *EnvelopesMonitorSuite) TestConfirmed() {
 		Hash:  testHash,
 	})
 	s.Contains(s.monitor.envelopes, testHash)
-	s.Equal(EnvelopeSent, s.monitor.envelopes[testHash])
+	s.Equal(EnvelopePosted, s.monitor.envelopes[testHash])
 }
 
 func (s *EnvelopesMonitorSuite) TestConfirmedWithAcknowledge() {
@@ -96,7 +96,7 @@ func (s *EnvelopesMonitorSuite) TestRemoved() {
 
 func (s *EnvelopesMonitorSuite) TestIgnoreNotFromMailserver() {
 	// enables filter in the tracker to drop confirmations from non-mailserver peers
-	s.monitor.mailServerConfirmation = true
+	s.monitor.awaitOnlyMailServerConfirmations = true
 	s.monitor.Add(testIDs, testHash, types.NewMessage{})
 	s.monitor.handleEvent(types.EnvelopeEvent{
 		Event: types.EventEnvelopeSent,
diff --git a/services/ext/service.go b/services/ext/service.go
index 4b9e60383..bf4944bec 100644
--- a/services/ext/service.go
+++ b/services/ext/service.go
@@ -125,8 +125,8 @@ func (s *Service) InitProtocol(nodeName string, identity *ecdsa.PrivateKey, db *
 	}
 
 	envelopesMonitorConfig := &transport.EnvelopesMonitorConfig{
-		MaxAttempts:                    s.config.MaxMessageDeliveryAttempts,
-		MailserverConfirmationsEnabled: s.config.MailServerConfirmations,
+		MaxAttempts:                      s.config.MaxMessageDeliveryAttempts,
+		AwaitOnlyMailServerConfirmations: s.config.MailServerConfirmations,
 		IsMailserver: func(peer types.EnodeID) bool {
 			return s.peerStore.Exist(peer)
 		},