diff --git a/apprise/plugins/matrix.py b/apprise/plugins/matrix.py
index c1401f23..70a40987 100644
--- a/apprise/plugins/matrix.py
+++ b/apprise/plugins/matrix.py
@@ -293,6 +293,9 @@ class NotifyMatrix(NotifyBase):
         # This gets initialized after a login/registration
         self.access_token = None
 
+        # This gets incremented for each request made against the v3 API
+        self.transaction_id = 0
+
         # Place an image inline with the message body
         self.include_image = include_image
 
@@ -612,8 +615,10 @@ class NotifyMatrix(NotifyBase):
 
             # Build our path
             if self.version == MatrixVersion.V3:
-                path = '/rooms/{}/send/m.room.message/0'.format(
-                    NotifyMatrix.quote(room_id))
+                path = '/rooms/{}/send/m.room.message/{}'.format(
+                    NotifyMatrix.quote(room_id),
+                    self.transaction_id,
+                )
 
             else:
                 path = '/rooms/{}/send/m.room.message'.format(
@@ -685,6 +690,12 @@ class NotifyMatrix(NotifyBase):
             method = 'PUT' if self.version == MatrixVersion.V3 else 'POST'
             postokay, response = self._fetch(
                 path, payload=payload, method=method)
+
+            # Increment the transaction ID to avoid future messages being
+            # recognized as retransmissions and ignored
+            if self.version == MatrixVersion.V3:
+                self.transaction_id += 1
+
             if not postokay:
                 # Notify our user
                 self.logger.warning(
diff --git a/test/test_plugin_matrix.py b/test/test_plugin_matrix.py
index df7e4dca..a9916add 100644
--- a/test/test_plugin_matrix.py
+++ b/test/test_plugin_matrix.py
@@ -1137,3 +1137,58 @@ def test_plugin_matrix_attachments_api_v2(mock_post, mock_get):
 
     # Force __del__() call
     del obj
+
+
+@mock.patch('requests.put')
+@mock.patch('requests.get')
+@mock.patch('requests.post')
+def test_plugin_matrix_transaction_ids_api_v3(mock_post, mock_get, mock_put):
+    """
+    NotifyMatrix() Transaction ID Checks (v3)
+
+    """
+
+    # Prepare a good response
+    response = mock.Mock()
+    response.status_code = requests.codes.ok
+    response.content = MATRIX_GOOD_RESPONSE.encode('utf-8')
+
+    # Prepare a bad response
+    bad_response = mock.Mock()
+    bad_response.status_code = requests.codes.internal_server_error
+
+    # Prepare Mock return object
+    mock_post.return_value = response
+    mock_get.return_value = response
+    mock_put.return_value = response
+
+    notifications_to_send = [10, 1]
+    mock_post_offset = mock_put_counter = 0
+
+    for logins, notifications in enumerate(notifications_to_send, start=1):
+        # Instantiate our object
+        obj = Apprise.instantiate('matrix://user:pass@localhost/#general?v=3')
+
+        for txnId in range(notifications):
+            assert obj.notify(
+                body='body', title='title', notify_type=NotifyType.INFO
+            ) is True
+
+            # Test our call count
+            assert mock_put.call_count == mock_put_counter + 1
+            # Login & join must happen only once per session
+            assert mock_post.call_count == mock_post_offset + (2 * logins)
+            assert mock_post.call_args_list[0][0][0] == \
+                'http://localhost/_matrix/client/v3/login'
+            assert mock_post.call_args_list[1][0][0] == \
+                'http://localhost/_matrix/client/v3/join/' + \
+                '%23general%3Alocalhost'
+            assert mock_put.call_args_list[txnId][0][0] == \
+                'http://localhost/_matrix/client/v3/rooms/' + \
+                f'%21abc123%3Alocalhost/send/m.room.message/{txnId}'
+
+            mock_put_counter = mock_put.call_count
+
+        # Force a object removal (thus a logout call)
+        del obj
+        mock_post_offset += 1