diff --git a/tasmota/support.ino b/tasmota/support.ino
index 25dfa833d..2165fff93 100644
--- a/tasmota/support.ino
+++ b/tasmota/support.ino
@@ -1169,10 +1169,18 @@ char* ResponseGetTime(uint32_t format, char* time_str)
   return time_str;
 }
 
+uint32_t ResponseLength(void) {
+  return strlen(TasmotaGlobal.mqtt_data);
+}
+
 void ResponseClear(void) {
   TasmotaGlobal.mqtt_data[0] = '\0';
 }
 
+void ResponseJsonStart(void) {
+  TasmotaGlobal.mqtt_data[0] = '{';
+}
+
 int Response_P(const char* format, ...)        // Content send snprintf_P char data
 {
   // This uses char strings. Be aware of sending %% if % is needed
@@ -1191,7 +1199,7 @@ int ResponseTime_P(const char* format, ...)    // Content send snprintf_P char d
 
   ResponseGetTime(Settings.flag2.time_format, TasmotaGlobal.mqtt_data);
 
-  int mlen = strlen(TasmotaGlobal.mqtt_data);
+  int mlen = ResponseLength();
   int len = ext_vsnprintf_P(TasmotaGlobal.mqtt_data + mlen, sizeof(TasmotaGlobal.mqtt_data) - mlen, format, args);
   va_end(args);
   return len + mlen;
@@ -1202,7 +1210,7 @@ int ResponseAppend_P(const char* format, ...)  // Content send snprintf_P char d
   // This uses char strings. Be aware of sending %% if % is needed
   va_list args;
   va_start(args, format);
-  int mlen = strlen(TasmotaGlobal.mqtt_data);
+  int mlen = ResponseLength();
   int len = ext_vsnprintf_P(TasmotaGlobal.mqtt_data + mlen, sizeof(TasmotaGlobal.mqtt_data) - mlen, format, args);
   va_end(args);
   return len + mlen;
diff --git a/tasmota/support_command.ino b/tasmota/support_command.ino
index d3983f403..2e1313021 100644
--- a/tasmota/support_command.ino
+++ b/tasmota/support_command.ino
@@ -304,7 +304,7 @@ void CommandHandler(char* topicBuf, char* dataBuf, uint32_t data_len)
     type = (char*)stemp1;
   }
 
-  if (TasmotaGlobal.mqtt_data[0] != '\0') {
+  if (ResponseLength()) {
 /*
     // Add "Command":"POWERONSTATE", like:
     // 12:15:37 MQT: stat/wemos4/RESULT = {"Command":"POWERONSTATE","PowerOnState":3}
diff --git a/tasmota/support_tasmota.ino b/tasmota/support_tasmota.ino
index b1e1e9da8..c16ad6f44 100644
--- a/tasmota/support_tasmota.ino
+++ b/tasmota/support_tasmota.ino
@@ -533,10 +533,10 @@ bool SendKey(uint32_t key, uint32_t device, uint32_t state)
           (POWER_TOGGLE == state)) {
         state = ~(TasmotaGlobal.power >> (device -1)) &1;   // POWER_OFF or POWER_ON
       }
-      snprintf_P(TasmotaGlobal.mqtt_data, sizeof(TasmotaGlobal.mqtt_data), GetStateText(state));
+      Response_P(GetStateText(state));
     }
 #ifdef USE_DOMOTICZ
-    if (!(DomoticzSendKey(key, device, state, strlen(TasmotaGlobal.mqtt_data)))) {
+    if (!(DomoticzSendKey(key, device, state, ResponseLength()))) {
 #endif  // USE_DOMOTICZ
       MqttPublish(stopic, ((key) ? Settings.flag.mqtt_switch_retain                         // CMND_SWITCHRETAIN
                                  : Settings.flag.mqtt_button_retain) &&                     // CMND_BUTTONRETAIN
@@ -823,7 +823,7 @@ bool MqttShowSensor(void)
 {
   ResponseAppendTime();
 
-  int json_data_start = strlen(TasmotaGlobal.mqtt_data);
+  int json_data_start = ResponseLength();
   for (uint32_t i = 0; i < MAX_SWITCHES; i++) {
 #ifdef USE_TM1638
     if (PinUsed(GPIO_SWT1, i) || (PinUsed(GPIO_TM1638CLK) && PinUsed(GPIO_TM1638DIO) && PinUsed(GPIO_TM1638STB))) {
@@ -836,7 +836,7 @@ bool MqttShowSensor(void)
   XsnsCall(FUNC_JSON_APPEND);
   XdrvCall(FUNC_JSON_APPEND);
 
-  bool json_data_available = (strlen(TasmotaGlobal.mqtt_data) - json_data_start);
+  bool json_data_available = (ResponseLength() - json_data_start);
   if (strstr_P(TasmotaGlobal.mqtt_data, PSTR(D_JSON_PRESSURE)) != nullptr) {
     ResponseAppend_P(PSTR(",\"" D_JSON_PRESSURE_UNIT "\":\"%s\""), PressureUnit().c_str());
   }
diff --git a/tasmota/xdrv_02_mqtt_9_impl.ino b/tasmota/xdrv_02_mqtt_9_impl.ino
index 2e7364303..6eee64262 100644
--- a/tasmota/xdrv_02_mqtt_9_impl.ino
+++ b/tasmota/xdrv_02_mqtt_9_impl.ino
@@ -605,10 +605,11 @@ void MqttPublishLoggingAsync(bool refresh) {
   char* line;
   size_t len;
   while (GetLog(Settings.mqttlog_level, &index, &line, &len)) {
-    strlcpy(TasmotaGlobal.mqtt_data, line, len);  // No JSON and ugly!!
     char stopic[TOPSZ];
     GetTopic_P(stopic, STAT, TasmotaGlobal.mqtt_topic, PSTR("LOGGING"));
-    MqttPublishLib(stopic, (const uint8_t*)TasmotaGlobal.mqtt_data, strlen(TasmotaGlobal.mqtt_data), false);
+//    strlcpy(TasmotaGlobal.mqtt_data, line, len);  // No JSON and ugly!!
+//    MqttPublishLib(stopic, (const uint8_t*)TasmotaGlobal.mqtt_data, strlen(TasmotaGlobal.mqtt_data), false);
+    MqttPublishLib(stopic, (const uint8_t*)line, len -1, false);
   }
 }
 
diff --git a/tasmota/xdrv_10_rules.ino b/tasmota/xdrv_10_rules.ino
index 5e74a99eb..df7016da8 100644
--- a/tasmota/xdrv_10_rules.ino
+++ b/tasmota/xdrv_10_rules.ino
@@ -985,7 +985,7 @@ void RulesEvery100ms(void) {
     XsnsNextCall(FUNC_JSON_APPEND, xsns_index);                      // ,"INA219":{"Voltage":4.494,"Current":0.020,"Power":0.089}
     TasmotaGlobal.tele_period = tele_period_save;
     if (strlen(TasmotaGlobal.mqtt_data)) {
-      TasmotaGlobal.mqtt_data[0] = '{';                              // {"INA219":{"Voltage":4.494,"Current":0.020,"Power":0.089}
+      ResponseJsonStart();                                           // {"INA219":{"Voltage":4.494,"Current":0.020,"Power":0.089}
       ResponseJsonEnd();
       RulesProcessEvent(TasmotaGlobal.mqtt_data);
     }
diff --git a/tasmota/xdrv_10_scripter.ino b/tasmota/xdrv_10_scripter.ino
index 8cfde19f1..00bf03e83 100755
--- a/tasmota/xdrv_10_scripter.ino
+++ b/tasmota/xdrv_10_scripter.ino
@@ -4979,9 +4979,9 @@ void ScripterEvery100ms(void) {
     TasmotaGlobal.tele_period = 2;
     XsnsNextCall(FUNC_JSON_APPEND, xsns_index);
     TasmotaGlobal.tele_period = script_tele_period_save;
-    if (strlen(TasmotaGlobal.mqtt_data)) {
-      TasmotaGlobal.mqtt_data[0] = '{';
-      snprintf_P(TasmotaGlobal.mqtt_data, sizeof(TasmotaGlobal.mqtt_data), PSTR("%s}"), TasmotaGlobal.mqtt_data);
+    if (ResponseLength()) {
+      ResponseJsonStart();
+      ResponseJsonEnd();
       Run_Scripter(">T", 2, TasmotaGlobal.mqtt_data);
     }
   }
diff --git a/tasmota/xdrv_13_display.ino b/tasmota/xdrv_13_display.ino
index a9992cdf7..ee85c2f0d 100755
--- a/tasmota/xdrv_13_display.ino
+++ b/tasmota/xdrv_13_display.ino
@@ -1312,9 +1312,9 @@ void get_dt_mqtt(void) {
   TasmotaGlobal.tele_period = 2;
   XsnsNextCall(FUNC_JSON_APPEND, xsns_index);
   TasmotaGlobal.tele_period = script_tele_period_save;
-  if (strlen(TasmotaGlobal.mqtt_data)) {
-    TasmotaGlobal.mqtt_data[0] = '{';
-    snprintf_P(TasmotaGlobal.mqtt_data, sizeof(TasmotaGlobal.mqtt_data), PSTR("%s}"), TasmotaGlobal.mqtt_data);
+  if (ResponseLength()) {
+    ResponseJsonStart();
+    ResponseJsonEnd();
   }
   get_dt_vars(TasmotaGlobal.mqtt_data);
 }
diff --git a/tasmota/xdrv_23_zigbee_2a_devices_impl.ino b/tasmota/xdrv_23_zigbee_2a_devices_impl.ino
index 38ab5158b..f11ab47df 100644
--- a/tasmota/xdrv_23_zigbee_2a_devices_impl.ino
+++ b/tasmota/xdrv_23_zigbee_2a_devices_impl.ino
@@ -518,7 +518,7 @@ void Z_Devices::jsonAppend(uint16_t shortaddr, const Z_attribute_list &attr_list
 void Z_Device::jsonPublishAttrList(const char * json_prefix, const Z_attribute_list &attr_list) const {
   bool use_fname = (Settings.flag4.zigbee_use_names) && (friendlyName);    // should we replace shortaddr with friendlyname?
 
-  TasmotaGlobal.mqtt_data[0] = 0; // clear string
+  ResponseClear(); // clear string
   // Do we prefix with `ZbReceived`?
   if (!Settings.flag4.remove_zbreceived && !Settings.flag5.zb_received_as_subtopic) {
     Response_P(PSTR("{\"%s\":"), json_prefix);
diff --git a/tasmota/xsns_69_opentherm.ino b/tasmota/xsns_69_opentherm.ino
index 0d0cec710..9b425f3fa 100644
--- a/tasmota/xsns_69_opentherm.ino
+++ b/tasmota/xsns_69_opentherm.ino
@@ -511,7 +511,7 @@ void sns_opentherm_flags_cmd(void)
         sns_opentherm_init_boiler_status();
     }
     bool addComma = false;
-    TasmotaGlobal.mqtt_data[0] = 0;
+    ResponseClear();
     for (int pos = 0; pos < OT_FLAGS_COUNT; ++pos)
     {
         int mask = 1 << pos;