diff --git a/node/api.go b/node/api.go
index 7fd645d..4b8e770 100644
--- a/node/api.go
+++ b/node/api.go
@@ -27,7 +27,7 @@ func (es ESConf) ListTXTHandler(w http.ResponseWriter, r *http.Request) {
 
 // XFeaturesHandler list supported features
 func XFeaturesHandler(w http.ResponseWriter, r *http.Request) {
-	features := []string{"list.txt", "x/features"}
+	features := []string{"list.txt", "u/e"}
 
 	LogRequest(r)
 
@@ -54,6 +54,27 @@ func (es ESConf) EHandler(w http.ResponseWriter, r *http.Request) {
 	w.Write([]byte(strings.Join(messages, "\n")))
 }
 
+// UEHandler /u/e/ schema
+func (es ESConf) UEHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	e := vars["echoes"]
+
+	log.Print("/u/e/ vars: ", e)
+
+	LogRequest(r)
+
+	ch := make(chan []string)
+	// Get echolist
+	go func() {
+		ch <- es.GetUEchoMessageHashes(e)
+	}()
+
+	messages := <-ch
+
+	w.WriteHeader(200)
+	w.Write([]byte(strings.Join(messages, "\n")))
+}
+
 // MHandler /m/ schema
 func (es ESConf) MHandler(w http.ResponseWriter, r *http.Request) {
 	vars := mux.Vars(r)
@@ -83,6 +104,9 @@ func Serve(listen string, es ESConf) {
 	r.HandleFunc("/e/{echo}", es.EHandler)
 	r.HandleFunc("/m/{msgid}", es.MHandler)
 
+	// Extensions
+	r.HandleFunc("/u/e/{echoes:[a-z0-9-_/.:]+}", es.UEHandler)
+
 	http.Handle("/", r)
 
 	srv := http.Server{
diff --git a/node/elastic.go b/node/elastic.go
index 4cf0fcc..a878d5d 100644
--- a/node/elastic.go
+++ b/node/elastic.go
@@ -105,6 +105,122 @@ func (es ESConf) GetEchoMessageHashes(echo string) []string {
 	return hashes
 }
 
+// GetLimitedEchoMessageHashes ...
+func (es ESConf) GetLimitedEchoMessageHashes(echo string, offset int, limit int) []string {
+	var hashes []string
+
+	// Check offset
+	var order string
+	if offset <= 0 {
+		order = "desc"
+	} else {
+		order = "asc"
+	}
+
+	l := strconv.Itoa(limit)
+
+	searchURI := strings.Join([]string{es.Host, es.Index, es.Type, "_search"}, "/")
+	searchQ := []byte(strings.Join([]string{
+		`{"sort": [
+            {"date":{ "order": "`, order, `" }},{ "_score":{ "order": "`, order, `" }}],
+          "query": {"query_string" : {"fields": ["msgid", "echo"], "query":"`, echo, `"}}, "size":`, l, `}`}, ""))
+
+	req, err := http.NewRequest("POST", searchURI, bytes.NewBuffer(searchQ))
+	client := &http.Client{}
+	resp, err := client.Do(req)
+
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return hashes
+	}
+
+	esresp, err := gabs.ParseJSON(body)
+	if err != nil {
+		panic(err)
+	}
+
+	hits, _ := esresp.Path("hits.hits").Data().([]interface{})
+	for _, hit := range hits {
+		h := make(map[string]interface{})
+		h = hit.(map[string]interface{})
+		source := make(map[string]interface{})
+		source = h["_source"].(map[string]interface{})
+		hashes = append(hashes, source["msgid"].(string))
+	}
+
+	return hashes
+}
+
+// GetUEchoMessageHashes ...
+func (es ESConf) GetUEchoMessageHashes(echoes string) []string {
+	var echohashes []string
+	// First get echoes list
+	el := strings.Split(echoes, "/")
+
+	// Check offset and limit
+	var offset int
+	var limit int
+	withOL := false
+	if strings.Contains(el[len(el)-1], ":") {
+		oflim := strings.Split(el[len(el)-1], ":")
+		o, err := strconv.Atoi(oflim[0])
+		l, err := strconv.Atoi(oflim[1])
+		if err != nil {
+			log.Print(err)
+		} else {
+			offset = o
+			limit = l
+			withOL = true
+		}
+	}
+
+	eh := make(map[string][]string)
+	var curEcho string
+	for i, echo := range el {
+		if echo == "" {
+			continue
+		}
+
+		if !strings.Contains(echo, ":") {
+			curEcho = echo
+		}
+
+		if withOL {
+			recEcho := es.GetLimitedEchoMessageHashes(curEcho, offset, limit)
+			eh[curEcho] = make([]string, len(curEcho))
+			eh[curEcho] = append(eh[curEcho], recEcho...)
+
+		} else {
+			recEcho := es.GetEchoMessageHashes(curEcho)
+			eh[curEcho] = make([]string, len(recEcho))
+			eh[curEcho] = append(eh[curEcho], recEcho...)
+		}
+		if i == len(el) {
+			break
+		}
+	}
+
+	// Make standard output:
+	// echo.name
+	// Some20SimbolsHash333
+	for k, v := range eh {
+		echohashes = append(echohashes, k)
+		if k == "" {
+			continue
+		}
+		for _, e := range v {
+			if e == "" {
+				continue
+			}
+			echohashes = append(echohashes, e)
+		}
+	}
+
+	return echohashes
+}
+
 // GetListTXT ...
 func (es ESConf) GetListTXT() []byte {
 	searchURI := strings.Join([]string{es.Host, es.Index, es.Type, "_search"}, "/")