diff --git a/lib/logreader.c b/lib/logreader.c
index 1eb73ce406..6570bac89a 100644
--- a/lib/logreader.c
+++ b/lib/logreader.c
@@ -766,7 +766,6 @@ log_reader_new(GlobalConfig *cfg)
   self->super.super.free_fn = log_reader_free;
   self->super.wakeup = log_reader_wakeup;
   self->super.schedule_dynamic_window_realloc = _schedule_dynamic_window_realloc;
-  self->super.metrics.raw_bytes_enabled = TRUE;
   self->handshake_in_progress = TRUE;
   log_reader_init_watches(self);
   g_mutex_init(&self->pending_close_lock);
diff --git a/lib/logsource.c b/lib/logsource.c
index 69116e3fe8..11f6cbabe2 100644
--- a/lib/logsource.c
+++ b/lib/logsource.c
@@ -495,11 +495,8 @@ _register_counters(LogSource *self)
 
   stats_unlock();
 
-  if (self->metrics.raw_bytes_enabled)
-    {
-      level = log_pipe_is_internal(&self->super) ? STATS_LEVEL3 : STATS_LEVEL1;
-      _register_raw_bytes_stats(self, level);
-    }
+  level = log_pipe_is_internal(&self->super) ? STATS_LEVEL3 : STATS_LEVEL1;
+  _register_raw_bytes_stats(self, level);
 }
 
 gboolean
@@ -522,8 +519,7 @@ log_source_init(LogPipe *s)
 static void
 _unregister_counters(LogSource *self)
 {
-  if (self->metrics.raw_bytes_enabled)
-    _unregister_raw_bytes_stats(self);
+  _unregister_raw_bytes_stats(self);
 
   stats_lock();
 
diff --git a/lib/logsource.h b/lib/logsource.h
index 8d67ebedb1..8f338ea667 100644
--- a/lib/logsource.h
+++ b/lib/logsource.h
@@ -89,7 +89,6 @@ struct _LogSource
     StatsClusterKey *recvd_messages_key;
     StatsCounterItem *recvd_messages;
 
-    gboolean raw_bytes_enabled;
     StatsClusterKey *recvd_bytes_key;
     StatsByteCounter recvd_bytes;
 
diff --git a/lib/logthrdest/logthrdestdrv.c b/lib/logthrdest/logthrdestdrv.c
index 83a0d15c37..7b517c1161 100644
--- a/lib/logthrdest/logthrdestdrv.c
+++ b/lib/logthrdest/logthrdestdrv.c
@@ -871,12 +871,9 @@ _register_worker_stats(LogThreadedDestWorker *self)
     stats_cluster_key_builder_add_label(kb, stats_cluster_label("id", self->owner->super.super.id ? : ""));
     _format_stats_key(self->owner, kb);
 
-    if (self->owner->metrics.raw_bytes_enabled)
-      {
-        stats_cluster_key_builder_set_name(kb, "output_event_bytes_total");
-        self->metrics.output_event_bytes_sc_key = stats_cluster_key_builder_build_single(kb);
-        stats_byte_counter_init(&self->metrics.written_bytes, self->metrics.output_event_bytes_sc_key, level, SBCP_KIB);
-      }
+    stats_cluster_key_builder_set_name(kb, "output_event_bytes_total");
+    self->metrics.output_event_bytes_sc_key = stats_cluster_key_builder_build_single(kb);
+    stats_byte_counter_init(&self->metrics.written_bytes, self->metrics.output_event_bytes_sc_key, level, SBCP_KIB);
   }
   stats_cluster_key_builder_pop(kb);
 
diff --git a/lib/logthrdest/logthrdestdrv.h b/lib/logthrdest/logthrdestdrv.h
index 3ed6eab76c..0456cd760e 100644
--- a/lib/logthrdest/logthrdestdrv.h
+++ b/lib/logthrdest/logthrdestdrv.h
@@ -145,8 +145,6 @@ struct _LogThreadedDestDriver
     StatsCounterItem *written_messages;
     StatsCounterItem *output_event_retries;
 
-    gboolean raw_bytes_enabled;
-
     StatsAggregator *max_message_size;
     StatsAggregator *average_messages_size;
     StatsAggregator *max_batch_size;
diff --git a/lib/logthrsource/logthrsourcedrv.c b/lib/logthrsource/logthrsourcedrv.c
index e495fccf78..5c5bb1fac2 100644
--- a/lib/logthrsource/logthrsourcedrv.c
+++ b/lib/logthrsource/logthrsourcedrv.c
@@ -235,7 +235,6 @@ log_threaded_source_worker_init_instance(LogThreadedSourceWorker *self, LogThrea
   self->super.super.init = _worker_init;
   self->super.super.free_fn = log_threaded_source_worker_free;
   self->super.wakeup = _worker_wakeup;
-
   self->worker_index = worker_index;
 }
 
diff --git a/modules/grpc/common/grpc-dest.cpp b/modules/grpc/common/grpc-dest.cpp
index 6241e8349e..af175975a2 100644
--- a/modules/grpc/common/grpc-dest.cpp
+++ b/modules/grpc/common/grpc-dest.cpp
@@ -269,7 +269,6 @@ grpc_dd_new(GlobalConfig *cfg, const gchar *stats_name)
   self->super.worker.construct = _construct_worker;
   self->super.stats_source = stats_register_type(stats_name);
   self->super.format_stats_key = _format_stats_key;
-  self->super.metrics.raw_bytes_enabled = TRUE;
 
   return self;
 }
diff --git a/modules/grpc/otel/otel-source-services.hpp b/modules/grpc/otel/otel-source-services.hpp
index 91ad61a9f6..2e69253a67 100644
--- a/modules/grpc/otel/otel-source-services.hpp
+++ b/modules/grpc/otel/otel-source-services.hpp
@@ -123,6 +123,8 @@ syslogng::grpc::otel::TraceServiceCall::Proceed(bool ok)
                 }
 
               LogMessage *msg = log_msg_new_empty();
+              log_msg_set_recvd_rawmsg_size(msg, span.ByteSizeLong());
+
               ProtobufParser::store_raw_metadata(msg, ctx.peer(), resource, resource_spans_schema_url, scope,
                                                  scope_spans_schema_url);
               ProtobufParser::store_raw(msg, span);
@@ -180,6 +182,8 @@ syslogng::grpc::otel::LogsServiceCall::Proceed(bool ok)
                 }
 
               LogMessage *msg = log_msg_new_empty();
+              log_msg_set_recvd_rawmsg_size(msg, log_record.ByteSizeLong());
+
               if (ProtobufParser::is_syslog_ng_log_record(resource, resource_logs_schema_url, scope,
                                                           scope_logs_schema_url))
                 {
@@ -245,6 +249,8 @@ syslogng::grpc::otel::MetricsServiceCall::Proceed(bool ok)
                 }
 
               LogMessage *msg = log_msg_new_empty();
+              log_msg_set_recvd_rawmsg_size(msg, metric.ByteSizeLong());
+
               ProtobufParser::store_raw_metadata(msg, ctx.peer(), resource, resource_metrics_schema_url, scope,
                                                  scope_metrics_schema_url);
               ProtobufParser::store_raw(msg, metric);
diff --git a/modules/http/http.c b/modules/http/http.c
index 9f76213518..8011cf4779 100644
--- a/modules/http/http.c
+++ b/modules/http/http.c
@@ -512,7 +512,6 @@ http_dd_new(GlobalConfig *cfg)
   self->super.super.super.super.free_fn = http_dd_free;
   self->super.super.super.super.generate_persist_name = _format_persist_name;
   self->super.format_stats_key = _format_stats_key;
-  self->super.metrics.raw_bytes_enabled = TRUE;
   self->super.stats_source = stats_register_type("http");
   self->super.worker.construct = http_dw_new;
 
diff --git a/modules/python-modules/syslogng/modules/webhook/source.py b/modules/python-modules/syslogng/modules/webhook/source.py
index 4f5418eaa6..d6fb936ec7 100644
--- a/modules/python-modules/syslogng/modules/webhook/source.py
+++ b/modules/python-modules/syslogng/modules/webhook/source.py
@@ -54,6 +54,7 @@ async def post(self, **path_arguments) -> None:
 
     def _construct_msg(self, request, path_arguments) -> LogMessage:
         msg = LogMessage(self.request.body)
+        msg.set_recvd_rawmsg_size(len(self.request.body))
 
         for key, value in request.query_arguments.items():
             value = value[0] if len(value) == 1 else value
diff --git a/modules/python/python-dest.c b/modules/python/python-dest.c
index 3524aee889..d3371c4778 100644
--- a/modules/python/python-dest.c
+++ b/modules/python/python-dest.c
@@ -657,8 +657,6 @@ python_dd_new(GlobalConfig *cfg)
   self->super.super.super.super.free_fn = python_dd_free;
   self->super.super.super.super.generate_persist_name = python_dd_format_persist_name;
 
-  self->super.metrics.raw_bytes_enabled = TRUE;
-
   self->super.worker.connect = python_dd_connect;
   self->super.worker.disconnect = python_dd_disconnect;
   self->super.worker.insert = python_dd_insert;
diff --git a/modules/python/python-logmsg.c b/modules/python/python-logmsg.c
index 4f5e9c995d..31893bde3d 100644
--- a/modules/python/python-logmsg.c
+++ b/modules/python/python-logmsg.c
@@ -375,6 +375,20 @@ py_log_message_set_source_ipaddress(PyLogMessage *self, PyObject *args, PyObject
   Py_RETURN_TRUE;
 }
 
+static PyObject *
+py_log_message_set_recvd_rawmsg_size(PyLogMessage *self, PyObject *args, PyObject *kwrds)
+{
+  gulong rawmsg_size;
+
+  static const gchar *kwlist[] = {"rawmsg_size", NULL};
+  if (!PyArg_ParseTupleAndKeywords(args, kwrds, "k", (gchar **) kwlist, &rawmsg_size))
+    return NULL;
+
+  log_msg_set_recvd_rawmsg_size(self->msg, rawmsg_size);
+
+  Py_RETURN_NONE;
+}
+
 static PyObject *
 py_log_message_set_timestamp(PyLogMessage *self, PyObject *args, PyObject *kwrds)
 {
@@ -466,6 +480,7 @@ static PyMethodDef py_log_message_methods[] =
   { "set_pri", (PyCFunction)py_log_message_set_pri, METH_VARARGS | METH_KEYWORDS, "Set syslog priority" },
   { "get_pri", (PyCFunction)py_log_message_get_pri, METH_VARARGS | METH_KEYWORDS, "Get syslog priority" },
   { "set_source_ipaddress", (PyCFunction)py_log_message_set_source_ipaddress, METH_VARARGS | METH_KEYWORDS, "Set source address" },
+  { "set_recvd_rawmsg_size", (PyCFunction)py_log_message_set_recvd_rawmsg_size, METH_VARARGS | METH_KEYWORDS, "Set raw message size" },
   { "set_timestamp", (PyCFunction)py_log_message_set_timestamp, METH_VARARGS | METH_KEYWORDS, "Set timestamp" },
   { "get_timestamp", (PyCFunction)py_log_message_get_timestamp, METH_VARARGS | METH_KEYWORDS, "Get timestamp" },
   { "set_bookmark", (PyCFunction)py_log_message_set_bookmark, METH_VARARGS | METH_KEYWORDS, "Set bookmark" },
diff --git a/news/feature-494.md b/news/feature-494.md
new file mode 100644
index 0000000000..4ebd1c4a63
--- /dev/null
+++ b/news/feature-494.md
@@ -0,0 +1 @@
+`webhook()`,`opentelemetry()` sources: support `input_event_bytes` metrics