diff --git a/ROADMAP.md b/ROADMAP.md
index 6ed2604..c25bd98 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -6,7 +6,7 @@
     * [x] Replies (RCS)
   * [x] Reactions (RCS)
   * [ ] Typing notifications (RCS)
-  * [ ] Read receipts (RCS)
+  * [x] Read receipts (RCS)
   * [x] Message deletions (own device only)
 * Google Messages → Matrix
   * [ ] Message content
diff --git a/libgm/binary/client.pb.go b/libgm/binary/client.pb.go
index 5559f1d..a164ec8 100644
--- a/libgm/binary/client.pb.go
+++ b/libgm/binary/client.pb.go
@@ -216,6 +216,61 @@ func (x *NotifyDittoActivityPayload) GetSuccess() bool {
 	return false
 }
 
+type MessageReadPayload struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ConversationID string `protobuf:"bytes,2,opt,name=conversationID,proto3" json:"conversationID,omitempty"`
+	MessageID      string `protobuf:"bytes,3,opt,name=messageID,proto3" json:"messageID,omitempty"`
+}
+
+func (x *MessageReadPayload) Reset() {
+	*x = MessageReadPayload{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_client_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *MessageReadPayload) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MessageReadPayload) ProtoMessage() {}
+
+func (x *MessageReadPayload) ProtoReflect() protoreflect.Message {
+	mi := &file_client_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MessageReadPayload.ProtoReflect.Descriptor instead.
+func (*MessageReadPayload) Descriptor() ([]byte, []int) {
+	return file_client_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *MessageReadPayload) GetConversationID() string {
+	if x != nil {
+		return x.ConversationID
+	}
+	return ""
+}
+
+func (x *MessageReadPayload) GetMessageID() string {
+	if x != nil {
+		return x.MessageID
+	}
+	return ""
+}
+
 type AckMessageResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -227,7 +282,7 @@ type AckMessageResponse struct {
 func (x *AckMessageResponse) Reset() {
 	*x = AckMessageResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[1]
+		mi := &file_client_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -240,7 +295,7 @@ func (x *AckMessageResponse) String() string {
 func (*AckMessageResponse) ProtoMessage() {}
 
 func (x *AckMessageResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[1]
+	mi := &file_client_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -253,7 +308,7 @@ func (x *AckMessageResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AckMessageResponse.ProtoReflect.Descriptor instead.
 func (*AckMessageResponse) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{1}
+	return file_client_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *AckMessageResponse) GetContainer() *AckContainer {
@@ -274,7 +329,7 @@ type AckContainer struct {
 func (x *AckContainer) Reset() {
 	*x = AckContainer{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[2]
+		mi := &file_client_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -287,7 +342,7 @@ func (x *AckContainer) String() string {
 func (*AckContainer) ProtoMessage() {}
 
 func (x *AckContainer) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[2]
+	mi := &file_client_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -300,7 +355,7 @@ func (x *AckContainer) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AckContainer.ProtoReflect.Descriptor instead.
 func (*AckContainer) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{2}
+	return file_client_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *AckContainer) GetData() *AckData {
@@ -321,7 +376,7 @@ type AckData struct {
 func (x *AckData) Reset() {
 	*x = AckData{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[3]
+		mi := &file_client_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -334,7 +389,7 @@ func (x *AckData) String() string {
 func (*AckData) ProtoMessage() {}
 
 func (x *AckData) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[3]
+	mi := &file_client_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -347,7 +402,7 @@ func (x *AckData) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AckData.ProtoReflect.Descriptor instead.
 func (*AckData) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{3}
+	return file_client_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *AckData) GetAckAmount() *AckAmount {
@@ -368,7 +423,7 @@ type AckAmount struct {
 func (x *AckAmount) Reset() {
 	*x = AckAmount{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[4]
+		mi := &file_client_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -381,7 +436,7 @@ func (x *AckAmount) String() string {
 func (*AckAmount) ProtoMessage() {}
 
 func (x *AckAmount) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[4]
+	mi := &file_client_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -394,7 +449,7 @@ func (x *AckAmount) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AckAmount.ProtoReflect.Descriptor instead.
 func (*AckAmount) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{4}
+	return file_client_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *AckAmount) GetCount() int32 {
@@ -417,7 +472,7 @@ type AckMessagePayload struct {
 func (x *AckMessagePayload) Reset() {
 	*x = AckMessagePayload{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[5]
+		mi := &file_client_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -430,7 +485,7 @@ func (x *AckMessagePayload) String() string {
 func (*AckMessagePayload) ProtoMessage() {}
 
 func (x *AckMessagePayload) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[5]
+	mi := &file_client_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -443,7 +498,7 @@ func (x *AckMessagePayload) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AckMessagePayload.ProtoReflect.Descriptor instead.
 func (*AckMessagePayload) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{5}
+	return file_client_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *AckMessagePayload) GetAuthData() *AuthMessage {
@@ -479,7 +534,7 @@ type AckMessageData struct {
 func (x *AckMessageData) Reset() {
 	*x = AckMessageData{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[6]
+		mi := &file_client_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -492,7 +547,7 @@ func (x *AckMessageData) String() string {
 func (*AckMessageData) ProtoMessage() {}
 
 func (x *AckMessageData) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[6]
+	mi := &file_client_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -505,7 +560,7 @@ func (x *AckMessageData) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AckMessageData.ProtoReflect.Descriptor instead.
 func (*AckMessageData) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{6}
+	return file_client_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *AckMessageData) GetRequestID() string {
@@ -534,7 +589,7 @@ type ImageMetaData struct {
 func (x *ImageMetaData) Reset() {
 	*x = ImageMetaData{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[7]
+		mi := &file_client_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -547,7 +602,7 @@ func (x *ImageMetaData) String() string {
 func (*ImageMetaData) ProtoMessage() {}
 
 func (x *ImageMetaData) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[7]
+	mi := &file_client_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -560,7 +615,7 @@ func (x *ImageMetaData) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ImageMetaData.ProtoReflect.Descriptor instead.
 func (*ImageMetaData) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{7}
+	return file_client_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *ImageMetaData) GetImageID() string {
@@ -589,7 +644,7 @@ type UploadImagePayload struct {
 func (x *UploadImagePayload) Reset() {
 	*x = UploadImagePayload{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[8]
+		mi := &file_client_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -602,7 +657,7 @@ func (x *UploadImagePayload) String() string {
 func (*UploadImagePayload) ProtoMessage() {}
 
 func (x *UploadImagePayload) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[8]
+	mi := &file_client_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -615,7 +670,7 @@ func (x *UploadImagePayload) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UploadImagePayload.ProtoReflect.Descriptor instead.
 func (*UploadImagePayload) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{8}
+	return file_client_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *UploadImagePayload) GetMetaData() *ImageMetaData {
@@ -643,7 +698,7 @@ type BugleBackendService struct {
 func (x *BugleBackendService) Reset() {
 	*x = BugleBackendService{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[9]
+		mi := &file_client_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -656,7 +711,7 @@ func (x *BugleBackendService) String() string {
 func (*BugleBackendService) ProtoMessage() {}
 
 func (x *BugleBackendService) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[9]
+	mi := &file_client_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -669,7 +724,7 @@ func (x *BugleBackendService) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use BugleBackendService.ProtoReflect.Descriptor instead.
 func (*BugleBackendService) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{9}
+	return file_client_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *BugleBackendService) GetData() *BugleCode {
@@ -690,7 +745,7 @@ type BugleCode struct {
 func (x *BugleCode) Reset() {
 	*x = BugleCode{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_client_proto_msgTypes[10]
+		mi := &file_client_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -703,7 +758,7 @@ func (x *BugleCode) String() string {
 func (*BugleCode) ProtoMessage() {}
 
 func (x *BugleCode) ProtoReflect() protoreflect.Message {
-	mi := &file_client_proto_msgTypes[10]
+	mi := &file_client_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -716,7 +771,7 @@ func (x *BugleCode) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use BugleCode.ProtoReflect.Descriptor instead.
 func (*BugleCode) Descriptor() ([]byte, []int) {
-	return file_client_proto_rawDescGZIP(), []int{10}
+	return file_client_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *BugleCode) GetType() int64 {
@@ -734,80 +789,86 @@ var file_client_proto_rawDesc = []byte{
 	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x36, 0x0a, 0x1a, 0x4e, 0x6f, 0x74, 0x69, 0x66, 0x79,
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+	0x07, 0x42, 0x0e, 0x5a, 0x0c, 0x2e, 0x2e, 0x2f, 0x2e, 0x2e, 0x2f, 0x62, 0x69, 0x6e, 0x61, 0x72,
+	0x79, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -823,35 +884,36 @@ func file_client_proto_rawDescGZIP() []byte {
 }
 
 var file_client_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_client_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
+var file_client_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
 var file_client_proto_goTypes = []interface{}{
 	(BugleMessageType)(0),              // 0: client.BugleMessageType
 	(BrowserTypes)(0),                  // 1: client.BrowserTypes
 	(*NotifyDittoActivityPayload)(nil), // 2: client.NotifyDittoActivityPayload
-	(*AckMessageResponse)(nil),         // 3: client.AckMessageResponse
-	(*AckContainer)(nil),               // 4: client.AckContainer
-	(*AckData)(nil),                    // 5: client.AckData
-	(*AckAmount)(nil),                  // 6: client.AckAmount
-	(*AckMessagePayload)(nil),          // 7: client.AckMessagePayload
-	(*AckMessageData)(nil),             // 8: client.AckMessageData
-	(*ImageMetaData)(nil),              // 9: client.ImageMetaData
-	(*UploadImagePayload)(nil),         // 10: client.UploadImagePayload
-	(*BugleBackendService)(nil),        // 11: client.BugleBackendService
-	(*BugleCode)(nil),                  // 12: client.BugleCode
-	(*AuthMessage)(nil),                // 13: messages.AuthMessage
-	(*EmptyArr)(nil),                   // 14: messages.EmptyArr
-	(*Device)(nil),                     // 15: messages.Device
+	(*MessageReadPayload)(nil),         // 3: client.MessageReadPayload
+	(*AckMessageResponse)(nil),         // 4: client.AckMessageResponse
+	(*AckContainer)(nil),               // 5: client.AckContainer
+	(*AckData)(nil),                    // 6: client.AckData
+	(*AckAmount)(nil),                  // 7: client.AckAmount
+	(*AckMessagePayload)(nil),          // 8: client.AckMessagePayload
+	(*AckMessageData)(nil),             // 9: client.AckMessageData
+	(*ImageMetaData)(nil),              // 10: client.ImageMetaData
+	(*UploadImagePayload)(nil),         // 11: client.UploadImagePayload
+	(*BugleBackendService)(nil),        // 12: client.BugleBackendService
+	(*BugleCode)(nil),                  // 13: client.BugleCode
+	(*AuthMessage)(nil),                // 14: messages.AuthMessage
+	(*EmptyArr)(nil),                   // 15: messages.EmptyArr
+	(*Device)(nil),                     // 16: messages.Device
 }
 var file_client_proto_depIdxs = []int32{
-	4,  // 0: client.AckMessageResponse.container:type_name -> client.AckContainer
-	5,  // 1: client.AckContainer.data:type_name -> client.AckData
-	6,  // 2: client.AckData.ackAmount:type_name -> client.AckAmount
-	13, // 3: client.AckMessagePayload.authData:type_name -> messages.AuthMessage
-	14, // 4: client.AckMessagePayload.emptyArr:type_name -> messages.EmptyArr
-	15, // 5: client.AckMessageData.device:type_name -> messages.Device
-	9,  // 6: client.UploadImagePayload.metaData:type_name -> client.ImageMetaData
-	13, // 7: client.UploadImagePayload.authData:type_name -> messages.AuthMessage
-	12, // 8: client.BugleBackendService.data:type_name -> client.BugleCode
+	5,  // 0: client.AckMessageResponse.container:type_name -> client.AckContainer
+	6,  // 1: client.AckContainer.data:type_name -> client.AckData
+	7,  // 2: client.AckData.ackAmount:type_name -> client.AckAmount
+	14, // 3: client.AckMessagePayload.authData:type_name -> messages.AuthMessage
+	15, // 4: client.AckMessagePayload.emptyArr:type_name -> messages.EmptyArr
+	16, // 5: client.AckMessageData.device:type_name -> messages.Device
+	10, // 6: client.UploadImagePayload.metaData:type_name -> client.ImageMetaData
+	14, // 7: client.UploadImagePayload.authData:type_name -> messages.AuthMessage
+	13, // 8: client.BugleBackendService.data:type_name -> client.BugleCode
 	9,  // [9:9] is the sub-list for method output_type
 	9,  // [9:9] is the sub-list for method input_type
 	9,  // [9:9] is the sub-list for extension type_name
@@ -879,7 +941,7 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AckMessageResponse); i {
+			switch v := v.(*MessageReadPayload); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -891,7 +953,7 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AckContainer); i {
+			switch v := v.(*AckMessageResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -903,7 +965,7 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AckData); i {
+			switch v := v.(*AckContainer); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -915,7 +977,7 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AckAmount); i {
+			switch v := v.(*AckData); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -927,7 +989,7 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AckMessagePayload); i {
+			switch v := v.(*AckAmount); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -939,7 +1001,7 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AckMessageData); i {
+			switch v := v.(*AckMessagePayload); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -951,7 +1013,7 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ImageMetaData); i {
+			switch v := v.(*AckMessageData); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -963,7 +1025,7 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UploadImagePayload); i {
+			switch v := v.(*ImageMetaData); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -975,7 +1037,7 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*BugleBackendService); i {
+			switch v := v.(*UploadImagePayload); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -987,6 +1049,18 @@ func file_client_proto_init() {
 			}
 		}
 		file_client_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*BugleBackendService); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_client_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*BugleCode); i {
 			case 0:
 				return &v.state
@@ -1005,7 +1079,7 @@ func file_client_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_client_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   11,
+			NumMessages:   12,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/libgm/binary/messages.pb.go b/libgm/binary/messages.pb.go
index 275f205..701998f 100644
--- a/libgm/binary/messages.pb.go
+++ b/libgm/binary/messages.pb.go
@@ -72,55 +72,151 @@ func (BugleRoute) EnumDescriptor() ([]byte, []int) {
 type ActionType int32
 
 const (
-	ActionType_UNKNOWN_ACTION_TYPE        ActionType = 0
-	ActionType_LIST_CONVERSATIONS         ActionType = 1
-	ActionType_LIST_MESSAGES              ActionType = 2
-	ActionType_SEND_MESSAGE               ActionType = 3
-	ActionType_LIST_CONVERSATIONS_SYNC    ActionType = 1111
-	ActionType_UPDATE_CONVERSATION        ActionType = 15
-	ActionType_GET_UPDATES                ActionType = 16
-	ActionType_GET_CONVERSATION_TYPE      ActionType = 21
-	ActionType_NOTIFY_DITTO_ACTIVITY      ActionType = 22
-	ActionType_DELETE_MESSAGE             ActionType = 23
-	ActionType_RESEND_MESSAGE             ActionType = 25
-	ActionType_IS_BUGLE_DEFAULT           ActionType = 31
-	ActionType_GET_PARTICIPANTS_THUMBNAIL ActionType = 37
-	ActionType_SEND_REACTION              ActionType = 38
+	ActionType_UNSPECIFIED                            ActionType = 0
+	ActionType_LIST_CONVERSATIONS                     ActionType = 1
+	ActionType_LIST_MESSAGES                          ActionType = 2
+	ActionType_SEND_MESSAGE                           ActionType = 3
+	ActionType_LIST_CONVERSATIONS_SYNC                ActionType = 1111
+	ActionType_MESSAGE_UPDATES                        ActionType = 4
+	ActionType_LIST_CONTACTS                          ActionType = 6
+	ActionType_CONVERSATION_UPDATES                   ActionType = 7
+	ActionType_GET_OR_CREATE_CONVERSATION             ActionType = 9
+	ActionType_MESSAGE_READ                           ActionType = 10
+	ActionType_BROWSER_PRESENCE_CHECK                 ActionType = 11
+	ActionType_TYPING_UPDATES                         ActionType = 12
+	ActionType_SETTINGS_UPDATE                        ActionType = 13
+	ActionType_USER_ALERT                             ActionType = 14
+	ActionType_UPDATE_CONVERSATION                    ActionType = 15
+	ActionType_GET_UPDATES                            ActionType = 16
+	ActionType_ACK_BROWSER_PRESENCE                   ActionType = 17
+	ActionType_LIST_STICKER_SETS                      ActionType = 18
+	ActionType_LEAVE_RCS_GROUP                        ActionType = 19
+	ActionType_ADD_PARTICIPANT_TO_RCS_GROUP           ActionType = 20
+	ActionType_GET_CONVERSATION_TYPE                  ActionType = 21
+	ActionType_NOTIFY_DITTO_ACTIVITY                  ActionType = 22
+	ActionType_DELETE_MESSAGE                         ActionType = 23
+	ActionType_INSTALL_STICKER_SET                    ActionType = 24
+	ActionType_RESEND_MESSAGE                         ActionType = 25
+	ActionType_GET_CONTACT_RCS_GROUP_STATUS           ActionType = 26
+	ActionType_DOWNLOAD_MESSAGE                       ActionType = 27
+	ActionType_LIST_TOP_CONTACTS                      ActionType = 28
+	ActionType_GET_CONTACTS_THUMBNAIL                 ActionType = 29
+	ActionType_CHANGE_PARTICIPANT_COLOR               ActionType = 30
+	ActionType_IS_BUGLE_DEFAULT                       ActionType = 31
+	ActionType_STICKER_USER_CONTEXT                   ActionType = 32
+	ActionType_FAVORITE_STICKER_PACKS                 ActionType = 33
+	ActionType_RECENT_STICKERS                        ActionType = 34
+	ActionType_UPDATE_RECENT_STICKERS                 ActionType = 35
+	ActionType_GET_FULL_SIZE_IMAGE                    ActionType = 36
+	ActionType_GET_PARTICIPANTS_THUMBNAIL             ActionType = 37
+	ActionType_SEND_REACTION                          ActionType = 38
+	ActionType_SEND_REPLY                             ActionType = 39
+	ActionType_GET_BLOB_FOR_ATTACHMENT                ActionType = 40
+	ActionType_GET_DEVICES_AVAILABLE_FOR_GAIA_PAIRING ActionType = 41
+	ActionType_CREATE_GAIA_PAIRING                    ActionType = 42
+	ActionType_GET_CONVERSATION                       ActionType = 43
+	ActionType_CREATE_GAIA_PAIRING_CLIENT_INIT        ActionType = 44
+	ActionType_CREATE_GAIA_PAIRING_CLIENT_FINISHED    ActionType = 45
+	ActionType_UNPAIR_GAIA_PAIRING                    ActionType = 46
 )
 
 // Enum value maps for ActionType.
 var (
 	ActionType_name = map[int32]string{
-		0:    "UNKNOWN_ACTION_TYPE",
+		0:    "UNSPECIFIED",
 		1:    "LIST_CONVERSATIONS",
 		2:    "LIST_MESSAGES",
 		3:    "SEND_MESSAGE",
 		1111: "LIST_CONVERSATIONS_SYNC",
+		4:    "MESSAGE_UPDATES",
+		6:    "LIST_CONTACTS",
+		7:    "CONVERSATION_UPDATES",
+		9:    "GET_OR_CREATE_CONVERSATION",
+		10:   "MESSAGE_READ",
+		11:   "BROWSER_PRESENCE_CHECK",
+		12:   "TYPING_UPDATES",
+		13:   "SETTINGS_UPDATE",
+		14:   "USER_ALERT",
 		15:   "UPDATE_CONVERSATION",
 		16:   "GET_UPDATES",
+		17:   "ACK_BROWSER_PRESENCE",
+		18:   "LIST_STICKER_SETS",
+		19:   "LEAVE_RCS_GROUP",
+		20:   "ADD_PARTICIPANT_TO_RCS_GROUP",
 		21:   "GET_CONVERSATION_TYPE",
 		22:   "NOTIFY_DITTO_ACTIVITY",
 		23:   "DELETE_MESSAGE",
+		24:   "INSTALL_STICKER_SET",
 		25:   "RESEND_MESSAGE",
+		26:   "GET_CONTACT_RCS_GROUP_STATUS",
+		27:   "DOWNLOAD_MESSAGE",
+		28:   "LIST_TOP_CONTACTS",
+		29:   "GET_CONTACTS_THUMBNAIL",
+		30:   "CHANGE_PARTICIPANT_COLOR",
 		31:   "IS_BUGLE_DEFAULT",
+		32:   "STICKER_USER_CONTEXT",
+		33:   "FAVORITE_STICKER_PACKS",
+		34:   "RECENT_STICKERS",
+		35:   "UPDATE_RECENT_STICKERS",
+		36:   "GET_FULL_SIZE_IMAGE",
 		37:   "GET_PARTICIPANTS_THUMBNAIL",
 		38:   "SEND_REACTION",
+		39:   "SEND_REPLY",
+		40:   "GET_BLOB_FOR_ATTACHMENT",
+		41:   "GET_DEVICES_AVAILABLE_FOR_GAIA_PAIRING",
+		42:   "CREATE_GAIA_PAIRING",
+		43:   "GET_CONVERSATION",
+		44:   "CREATE_GAIA_PAIRING_CLIENT_INIT",
+		45:   "CREATE_GAIA_PAIRING_CLIENT_FINISHED",
+		46:   "UNPAIR_GAIA_PAIRING",
 	}
 	ActionType_value = map[string]int32{
-		"UNKNOWN_ACTION_TYPE":        0,
-		"LIST_CONVERSATIONS":         1,
-		"LIST_MESSAGES":              2,
-		"SEND_MESSAGE":               3,
-		"LIST_CONVERSATIONS_SYNC":    1111,
-		"UPDATE_CONVERSATION":        15,
-		"GET_UPDATES":                16,
-		"GET_CONVERSATION_TYPE":      21,
-		"NOTIFY_DITTO_ACTIVITY":      22,
-		"DELETE_MESSAGE":             23,
-		"RESEND_MESSAGE":             25,
-		"IS_BUGLE_DEFAULT":           31,
-		"GET_PARTICIPANTS_THUMBNAIL": 37,
-		"SEND_REACTION":              38,
+		"UNSPECIFIED":                            0,
+		"LIST_CONVERSATIONS":                     1,
+		"LIST_MESSAGES":                          2,
+		"SEND_MESSAGE":                           3,
+		"LIST_CONVERSATIONS_SYNC":                1111,
+		"MESSAGE_UPDATES":                        4,
+		"LIST_CONTACTS":                          6,
+		"CONVERSATION_UPDATES":                   7,
+		"GET_OR_CREATE_CONVERSATION":             9,
+		"MESSAGE_READ":                           10,
+		"BROWSER_PRESENCE_CHECK":                 11,
+		"TYPING_UPDATES":                         12,
+		"SETTINGS_UPDATE":                        13,
+		"USER_ALERT":                             14,
+		"UPDATE_CONVERSATION":                    15,
+		"GET_UPDATES":                            16,
+		"ACK_BROWSER_PRESENCE":                   17,
+		"LIST_STICKER_SETS":                      18,
+		"LEAVE_RCS_GROUP":                        19,
+		"ADD_PARTICIPANT_TO_RCS_GROUP":           20,
+		"GET_CONVERSATION_TYPE":                  21,
+		"NOTIFY_DITTO_ACTIVITY":                  22,
+		"DELETE_MESSAGE":                         23,
+		"INSTALL_STICKER_SET":                    24,
+		"RESEND_MESSAGE":                         25,
+		"GET_CONTACT_RCS_GROUP_STATUS":           26,
+		"DOWNLOAD_MESSAGE":                       27,
+		"LIST_TOP_CONTACTS":                      28,
+		"GET_CONTACTS_THUMBNAIL":                 29,
+		"CHANGE_PARTICIPANT_COLOR":               30,
+		"IS_BUGLE_DEFAULT":                       31,
+		"STICKER_USER_CONTEXT":                   32,
+		"FAVORITE_STICKER_PACKS":                 33,
+		"RECENT_STICKERS":                        34,
+		"UPDATE_RECENT_STICKERS":                 35,
+		"GET_FULL_SIZE_IMAGE":                    36,
+		"GET_PARTICIPANTS_THUMBNAIL":             37,
+		"SEND_REACTION":                          38,
+		"SEND_REPLY":                             39,
+		"GET_BLOB_FOR_ATTACHMENT":                40,
+		"GET_DEVICES_AVAILABLE_FOR_GAIA_PAIRING": 41,
+		"CREATE_GAIA_PAIRING":                    42,
+		"GET_CONVERSATION":                       43,
+		"CREATE_GAIA_PAIRING_CLIENT_INIT":        44,
+		"CREATE_GAIA_PAIRING_CLIENT_FINISHED":    45,
+		"UNPAIR_GAIA_PAIRING":                    46,
 	}
 )
 
@@ -628,7 +724,7 @@ func (x *InternalRequestData) GetAction() ActionType {
 	if x != nil {
 		return x.Action
 	}
-	return ActionType_UNKNOWN_ACTION_TYPE
+	return ActionType_UNSPECIFIED
 }
 
 func (x *InternalRequestData) GetBool1() bool {
@@ -863,7 +959,7 @@ func (x *SendMessageInternal) GetAction() ActionType {
 	if x != nil {
 		return x.Action
 	}
-	return ActionType_UNKNOWN_ACTION_TYPE
+	return ActionType_UNSPECIFIED
 }
 
 func (x *SendMessageInternal) GetEncryptedProtoData() []byte {
@@ -1657,34 +1753,86 @@ var file_messages_proto_rawDesc = []byte{
 	0x4f, 0x57, 0x4e, 0x5f, 0x42, 0x55, 0x47, 0x4c, 0x45, 0x5f, 0x52, 0x4f, 0x55, 0x54, 0x45, 0x10,
 	0x00, 0x12, 0x0d, 0x0a, 0x09, 0x44, 0x61, 0x74, 0x61, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x10, 0x13,
 	0x12, 0x0d, 0x0a, 0x09, 0x50, 0x61, 0x69, 0x72, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x10, 0x0e, 0x2a,
-	0xd1, 0x02, 0x0a, 0x0a, 0x41, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x54, 0x79, 0x70, 0x65, 0x12, 0x17,
-	0x0a, 0x13, 0x55, 0x4e, 0x4b, 0x4e, 0x4f, 0x57, 0x4e, 0x5f, 0x41, 0x43, 0x54, 0x49, 0x4f, 0x4e,
-	0x5f, 0x54, 0x59, 0x50, 0x45, 0x10, 0x00, 0x12, 0x16, 0x0a, 0x12, 0x4c, 0x49, 0x53, 0x54, 0x5f,
-	0x43, 0x4f, 0x4e, 0x56, 0x45, 0x52, 0x53, 0x41, 0x54, 0x49, 0x4f, 0x4e, 0x53, 0x10, 0x01, 0x12,
-	0x11, 0x0a, 0x0d, 0x4c, 0x49, 0x53, 0x54, 0x5f, 0x4d, 0x45, 0x53, 0x53, 0x41, 0x47, 0x45, 0x53,
-	0x10, 0x02, 0x12, 0x10, 0x0a, 0x0c, 0x53, 0x45, 0x4e, 0x44, 0x5f, 0x4d, 0x45, 0x53, 0x53, 0x41,
-	0x47, 0x45, 0x10, 0x03, 0x12, 0x1c, 0x0a, 0x17, 0x4c, 0x49, 0x53, 0x54, 0x5f, 0x43, 0x4f, 0x4e,
-	0x56, 0x45, 0x52, 0x53, 0x41, 0x54, 0x49, 0x4f, 0x4e, 0x53, 0x5f, 0x53, 0x59, 0x4e, 0x43, 0x10,
-	0xd7, 0x08, 0x12, 0x17, 0x0a, 0x13, 0x55, 0x50, 0x44, 0x41, 0x54, 0x45, 0x5f, 0x43, 0x4f, 0x4e,
-	0x56, 0x45, 0x52, 0x53, 0x41, 0x54, 0x49, 0x4f, 0x4e, 0x10, 0x0f, 0x12, 0x0f, 0x0a, 0x0b, 0x47,
-	0x45, 0x54, 0x5f, 0x55, 0x50, 0x44, 0x41, 0x54, 0x45, 0x53, 0x10, 0x10, 0x12, 0x19, 0x0a, 0x15,
-	0x47, 0x45, 0x54, 0x5f, 0x43, 0x4f, 0x4e, 0x56, 0x45, 0x52, 0x53, 0x41, 0x54, 0x49, 0x4f, 0x4e,
-	0x5f, 0x54, 0x59, 0x50, 0x45, 0x10, 0x15, 0x12, 0x19, 0x0a, 0x15, 0x4e, 0x4f, 0x54, 0x49, 0x46,
-	0x59, 0x5f, 0x44, 0x49, 0x54, 0x54, 0x4f, 0x5f, 0x41, 0x43, 0x54, 0x49, 0x56, 0x49, 0x54, 0x59,
-	0x10, 0x16, 0x12, 0x12, 0x0a, 0x0e, 0x44, 0x45, 0x4c, 0x45, 0x54, 0x45, 0x5f, 0x4d, 0x45, 0x53,
-	0x53, 0x41, 0x47, 0x45, 0x10, 0x17, 0x12, 0x12, 0x0a, 0x0e, 0x52, 0x45, 0x53, 0x45, 0x4e, 0x44,
-	0x5f, 0x4d, 0x45, 0x53, 0x53, 0x41, 0x47, 0x45, 0x10, 0x19, 0x12, 0x14, 0x0a, 0x10, 0x49, 0x53,
-	0x5f, 0x42, 0x55, 0x47, 0x4c, 0x45, 0x5f, 0x44, 0x45, 0x46, 0x41, 0x55, 0x4c, 0x54, 0x10, 0x1f,
-	0x12, 0x1e, 0x0a, 0x1a, 0x47, 0x45, 0x54, 0x5f, 0x50, 0x41, 0x52, 0x54, 0x49, 0x43, 0x49, 0x50,
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+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/libgm/binary/raw/client.proto b/libgm/binary/raw/client.proto
index b52a180..1324af4 100644
--- a/libgm/binary/raw/client.proto
+++ b/libgm/binary/raw/client.proto
@@ -9,6 +9,11 @@ message NotifyDittoActivityPayload {
     bool success = 2;
 }
 
+message MessageReadPayload {
+    string conversationID = 2;
+    string messageID = 3;
+}
+
 message AckMessageResponse {
     AckContainer container = 1;
 }
diff --git a/libgm/binary/raw/messages.proto b/libgm/binary/raw/messages.proto
index 579d22d..e886a95 100644
--- a/libgm/binary/raw/messages.proto
+++ b/libgm/binary/raw/messages.proto
@@ -184,20 +184,52 @@ message ConfigVersion {
 }
 
 enum ActionType {
-    UNKNOWN_ACTION_TYPE = 0;
+    UNSPECIFIED = 0;
     LIST_CONVERSATIONS = 1;
     LIST_MESSAGES = 2;
     SEND_MESSAGE = 3;
     LIST_CONVERSATIONS_SYNC = 1111;
+    MESSAGE_UPDATES = 4;
+    LIST_CONTACTS = 6;
+    CONVERSATION_UPDATES = 7;
+    GET_OR_CREATE_CONVERSATION = 9;
+    MESSAGE_READ = 10;
+    BROWSER_PRESENCE_CHECK = 11;
+    TYPING_UPDATES = 12;
+    SETTINGS_UPDATE = 13;
+    USER_ALERT = 14;
     UPDATE_CONVERSATION = 15;
     GET_UPDATES = 16;
+    ACK_BROWSER_PRESENCE = 17;
+    LIST_STICKER_SETS = 18;
+    LEAVE_RCS_GROUP = 19;
+    ADD_PARTICIPANT_TO_RCS_GROUP = 20;
     GET_CONVERSATION_TYPE = 21;
     NOTIFY_DITTO_ACTIVITY = 22;
     DELETE_MESSAGE = 23;
+    INSTALL_STICKER_SET = 24;
     RESEND_MESSAGE = 25;
+    GET_CONTACT_RCS_GROUP_STATUS = 26;
+    DOWNLOAD_MESSAGE = 27;
+    LIST_TOP_CONTACTS = 28;
+    GET_CONTACTS_THUMBNAIL = 29;
+    CHANGE_PARTICIPANT_COLOR = 30;
     IS_BUGLE_DEFAULT = 31;
+    STICKER_USER_CONTEXT = 32;
+    FAVORITE_STICKER_PACKS = 33;
+    RECENT_STICKERS = 34;
+    UPDATE_RECENT_STICKERS = 35;
+    GET_FULL_SIZE_IMAGE = 36;
     GET_PARTICIPANTS_THUMBNAIL = 37;
     SEND_REACTION = 38;
+    SEND_REPLY = 39;
+    GET_BLOB_FOR_ATTACHMENT = 40;
+    GET_DEVICES_AVAILABLE_FOR_GAIA_PAIRING = 41;
+    CREATE_GAIA_PAIRING = 42;
+    GET_CONVERSATION = 43;
+    CREATE_GAIA_PAIRING_CLIENT_INIT = 44;
+    CREATE_GAIA_PAIRING_CLIENT_FINISHED = 45;
+    UNPAIR_GAIA_PAIRING = 46;
 }
 
 enum MessageType {
diff --git a/libgm/messages.go b/libgm/messages.go
index 4bc103a..eb5a770 100644
--- a/libgm/messages.go
+++ b/libgm/messages.go
@@ -54,3 +54,20 @@ func (m *Messages) Delete(messageId string) (*binary.DeleteMessageResponse, erro
 	m.client.Logger.Debug().Any("res", res).Msg("deleted message!")
 	return res, nil
 }
+
+func (m *Messages) MarkRead(conversationID, messageID string) error {
+	payload := &binary.MessageReadPayload{ConversationID: conversationID, MessageID: messageID}
+	actionType := binary.ActionType_MESSAGE_READ
+
+	sentRequestId, sendErr := m.client.sessionHandler.completeSendMessage(actionType, true, payload)
+	if sendErr != nil {
+		return sendErr
+	}
+
+	_, err := m.client.sessionHandler.WaitForResponse(sentRequestId, actionType)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/libgm/routes/mapped.go b/libgm/routes/mapped.go
index 8b7c0c2..cea20fb 100644
--- a/libgm/routes/mapped.go
+++ b/libgm/routes/mapped.go
@@ -20,6 +20,7 @@ var Routes = map[binary.ActionType]Route{
 	binary.ActionType_GET_UPDATES:                GET_UPDATES,
 	binary.ActionType_LIST_CONVERSATIONS:         LIST_CONVERSATIONS,
 	binary.ActionType_LIST_CONVERSATIONS_SYNC:    LIST_CONVERSATIONS_WITH_UPDATES,
+	binary.ActionType_MESSAGE_READ:               MESSAGE_READ,
 	binary.ActionType_NOTIFY_DITTO_ACTIVITY:      NOTIFY_DITTO_ACTIVITY,
 	binary.ActionType_GET_CONVERSATION_TYPE:      GET_CONVERSATION_TYPE,
 	binary.ActionType_LIST_MESSAGES:              LIST_MESSAGES,
diff --git a/libgm/routes/messages.go b/libgm/routes/messages.go
index 6314a46..4be0a21 100644
--- a/libgm/routes/messages.go
+++ b/libgm/routes/messages.go
@@ -37,3 +37,12 @@ var DELETE_MESSAGE = Route{
 	UseSessionID:   false,
 	UseTTL:         true,
 }
+
+var MESSAGE_READ = Route{
+	Action:         binary.ActionType_MESSAGE_READ,
+	MessageType:    binary.MessageType_BUGLE_MESSAGE,
+	BugleRoute:     binary.BugleRoute_DataEvent,
+	ResponseStruct: nil,
+	UseSessionID:   false,
+	UseTTL:         true,
+}
diff --git a/portal.go b/portal.go
index 59e5c8c..fd12992 100644
--- a/portal.go
+++ b/portal.go
@@ -253,8 +253,8 @@ type Portal struct {
 }
 
 var (
-	_ bridge.Portal = (*Portal)(nil)
-	//_ bridge.ReadReceiptHandlingPortal = (*Portal)(nil)
+	_ bridge.Portal                    = (*Portal)(nil)
+	_ bridge.ReadReceiptHandlingPortal = (*Portal)(nil)
 	//_ bridge.MembershipHandlingPortal  = (*Portal)(nil)
 	//_ bridge.MetaHandlingPortal        = (*Portal)(nil)
 	//_ bridge.TypingPortal              = (*Portal)(nil)
@@ -1248,6 +1248,41 @@ func (portal *Portal) HandleMatrixMessage(sender *User, evt *event.Event, timing
 	}
 }
 
+func (portal *Portal) HandleMatrixReadReceipt(brUser bridge.User, eventID id.EventID, receipt event.ReadReceipt) {
+	user := brUser.(*User)
+	log := portal.zlog.With().
+		Str("event_id", eventID.String()).
+		Time("receipt_ts", receipt.Timestamp).
+		Str("action", "handle matrix read receipt").
+		Logger()
+	ctx := log.WithContext(context.TODO())
+	log.Debug().Msg("Handling Matrix read receipt")
+	targetMessage, err := portal.bridge.DB.Message.GetByMXID(ctx, eventID)
+	if err != nil {
+		log.Err(err).Msg("Failed to get target message to handle read receipt")
+		return
+	} else if targetMessage == nil {
+		lastMessage, err := portal.bridge.DB.Message.GetLastInChat(ctx, portal.Key)
+		if err != nil {
+			log.Err(err).Msg("Failed to get last message to handle read receipt")
+			return
+		} else if receipt.Timestamp.Before(lastMessage.Timestamp) {
+			log.Debug().Msg("Ignoring read receipt for unknown message with timestamp before last message")
+			return
+		} else {
+			log.Debug().Msg("Marking last message in chat as read for receipt targeting unknown message")
+		}
+		targetMessage = lastMessage
+	}
+	log = log.With().Str("message_id", targetMessage.ID).Logger()
+	err = user.Client.Messages.MarkRead(portal.ID, targetMessage.ID)
+	if err != nil {
+		log.Err(err).Msg("Failed to mark message as read")
+	} else {
+		log.Debug().Msg("Marked message as read after Matrix read receipt")
+	}
+}
+
 func (portal *Portal) HandleMatrixReaction(sender *User, evt *event.Event) {
 	err := portal.handleMatrixReaction(sender, evt)
 	go portal.sendMessageMetrics(evt, err, "Error sending", nil)
diff --git a/user.go b/user.go
index efc2c3d..e66367b 100644
--- a/user.go
+++ b/user.go
@@ -576,6 +576,7 @@ func (user *User) syncConversation(v *binary.Conversation) {
 		default:
 			portal.UpdateMetadata(user, v)
 			portal.missedForwardBackfill(user, time.UnixMicro(v.LastMessageTimestamp), v.LatestMessageID, !v.GetUnread())
+			// TODO sync read status if there was nothing backfilled
 		}
 	} else if updateType == binary.ConvUpdateTypes_UNARCHIVED || updateType == binary.ConvUpdateTypes_ARCHIVED {
 		err := portal.CreateMatrixRoom(user, v)