diff --git a/server/server.go b/server/server.go
index 3a4ba53..78715d2 100644
--- a/server/server.go
+++ b/server/server.go
@@ -287,7 +287,7 @@ func (s *Server) handleInternal(w http.ResponseWriter, r *http.Request) error {
 	} else if r.Method == http.MethodOptions {
 		return s.handleOptions(w, r)
 	} else if r.Method == http.MethodGet && topicRegex.MatchString(r.URL.Path) {
-		return s.handleHome(w, r)
+		return s.handleTopic(w, r)
 	} else if (r.Method == http.MethodPut || r.Method == http.MethodPost) && topicRegex.MatchString(r.URL.Path) {
 		return s.withRateLimit(w, r, s.handlePublish)
 	} else if r.Method == http.MethodGet && sendRegex.MatchString(r.URL.Path) {
@@ -309,6 +309,17 @@ func (s *Server) handleHome(w http.ResponseWriter, r *http.Request) error {
 	})
 }
 
+func (s *Server) handleTopic(w http.ResponseWriter, r *http.Request) error {
+	unifiedpush := readParam(r, "x-unifiedpush", "unifiedpush", "up") == "1" // see PUT/POST too!
+	if unifiedpush {
+		w.Header().Set("Content-Type", "application/json")
+		w.Header().Set("Access-Control-Allow-Origin", "*") // CORS, allow cross-origin requests
+		_, err := io.WriteString(w, `{"unifiedpush":{"version":1}}`+"\n")
+		return err
+	}
+	return s.handleHome(w, r)
+}
+
 func (s *Server) handleEmpty(_ http.ResponseWriter, _ *http.Request) error {
 	return nil
 }
@@ -339,7 +350,7 @@ func (s *Server) handlePublish(w http.ResponseWriter, r *http.Request, v *visito
 		return err
 	}
 	m := newDefaultMessage(t.ID, strings.TrimSpace(string(b)))
-	cache, firebase, email, err := s.parseParams(r, m)
+	cache, firebase, email, err := s.parsePublishParams(r, m)
 	if err != nil {
 		return err
 	}
@@ -388,7 +399,7 @@ func (s *Server) handlePublish(w http.ResponseWriter, r *http.Request, v *visito
 	return nil
 }
 
-func (s *Server) parseParams(r *http.Request, m *message) (cache bool, firebase bool, email string, err error) {
+func (s *Server) parsePublishParams(r *http.Request, m *message) (cache bool, firebase bool, email string, err error) {
 	cache = readParam(r, "x-cache", "cache") != "no"
 	firebase = readParam(r, "x-firebase", "firebase") != "no"
 	email = readParam(r, "x-email", "x-e-mail", "email", "e-mail", "mail", "e")
@@ -426,6 +437,10 @@ func (s *Server) parseParams(r *http.Request, m *message) (cache bool, firebase
 		}
 		m.Time = delay.Unix()
 	}
+	unifiedpush := readParam(r, "x-unifiedpush", "unifiedpush", "up") == "1" // see GET too!
+	if unifiedpush {
+		firebase = false
+	}
 	return cache, firebase, email, nil
 }
 
diff --git a/server/server_test.go b/server/server_test.go
index cf3fc58..589b982 100644
--- a/server/server_test.go
+++ b/server/server_test.go
@@ -583,6 +583,13 @@ func TestServer_PublishEmailNoMailer_Fail(t *testing.T) {
 	require.Equal(t, 400, response.Code)
 }
 
+func TestServer_UnifiedPushDiscovery(t *testing.T) {
+	s := newTestServer(t, newTestConfig(t))
+	response := request(t, s, "GET", "/mytopic?up=1", "", nil)
+	require.Equal(t, 200, response.Code)
+	require.Equal(t, `{"unifiedpush":{"version":1}}`+"\n", response.Body.String())
+}
+
 func newTestConfig(t *testing.T) *Config {
 	conf := NewConfig()
 	conf.CacheFile = filepath.Join(t.TempDir(), "cache.db")