diff --git a/apprise/plugins/slack.py b/apprise/plugins/slack.py
index 9fa6092e..127fba94 100644
--- a/apprise/plugins/slack.py
+++ b/apprise/plugins/slack.py
@@ -76,6 +76,7 @@ import re
 import requests
 from json import dumps
 from json import loads
+from json import JSONDecodeError
 from time import time
 
 from .base import NotifyBase
@@ -410,18 +411,30 @@ class NotifySlack(NotifyBase):
                 if self.notify_format == NotifyFormat.MARKDOWN \
                 else 'plain_text'
 
+            # If we have to handle Blocks API serialized JSON
+            if kwargs.get('body_format', None) == 'json':
+                try:
+                    content = loads(body)
+                except JSONDecodeError:
+                    self.logger.error(
+                        "'body_format' is set as 'json',"
+                        "but body is not valid JSON string"
+                    )
+                    return False
+            # Else, we continue as before
+            else:
+                content = {'blocks': [{
+                    'type': 'section',
+                    'text': {
+                        'type': _slack_format,
+                        'text': body
+                    }
+                }]}
+            content.update({'color': self.color(notify_type)})
+
             payload = {
                 'username': self.user if self.user else self.app_id,
-                'attachments': [{
-                    'blocks': [{
-                        'type': 'section',
-                        'text': {
-                            'type': _slack_format,
-                            'text': body
-                        }
-                    }],
-                    'color': self.color(notify_type),
-                }]
+                'attachments': [content.copy()]
             }
 
             # Slack only accepts non-empty header sections
@@ -463,6 +476,14 @@ class NotifySlack(NotifyBase):
                 payload['attachments'][0]['blocks'].append(_footer)
 
         else:
+            # We do not support JSON body without the Blocks API
+            if kwargs.get('body_format', None) == 'json':
+                self.logger.error(
+                    "'body_format' is set as 'json',"
+                    "the 'blocks' URL parameter is not set"
+                )
+                return False
+
             #
             # Legacy API Formatting
             #
diff --git a/test/test_plugin_slack.py b/test/test_plugin_slack.py
index 5af84511..3ea87366 100644
--- a/test/test_plugin_slack.py
+++ b/test/test_plugin_slack.py
@@ -759,6 +759,53 @@ def test_plugin_slack_markdown(mock_get, mock_request):
         "\n\nChannel Testing\n<!channelA>\n<!channelA|Description>\n\n"\
         "User ID Testing\n<@U1ZQL9N3Y>\n<@U1ZQL9N3Y|heheh>"
 
+@mock.patch('requests.request')
+@mock.patch('requests.get')
+def test_plugin_slack_body_format_blocks(mock_get, mock_request):
+    """
+    NotifySlack() for using Blocks API directly
+
+    """
+
+    request = mock.Mock()
+    request.content = b'ok'
+    request.status_code = requests.codes.ok
+
+    # Prepare Mock
+    mock_request.return_value = request
+    mock_get.return_value = request
+
+    # Variation Initializations
+    aobj = Apprise()
+    assert aobj.add(
+        'slack://T1JJ3T3L2/A1BRTD4JD/TIiajkdnlazkcOXrIdevi7FQ/?blocks=yes')
+
+    body_text = "Blocks API"
+    title_text = "title"
+    body = dumps({"blocks":[
+        {
+          "type": "section",
+          "text": {
+            "type": "mrkdwn",
+            "text": body_text
+          }
+        },
+    ]})
+
+    # Send our notification
+    assert aobj.notify(
+        body=body, title=title_text, notify_type=NotifyType.INFO,
+        body_format="json")
+
+    data = loads(mock_request.call_args_list[0][1]['data'])
+
+    # Our added block is not [0], as a title block
+    # has been injected by the plugin
+    title_block = data['attachments'][0]["blocks"][0]
+    added_block = data['attachments'][0]["blocks"][1]
+    assert title_block["text"]["text"] == title_text
+    assert added_block["text"]["text"] == body_text
+
 
 @mock.patch('requests.request')
 def test_plugin_slack_single_thread_reply(mock_request):