diff --git a/dpytools/slack/slack.py b/dpytools/slack/slack.py
index dc826c5..13eb617 100644
--- a/dpytools/slack/slack.py
+++ b/dpytools/slack/slack.py
@@ -1,14 +1,31 @@
+import logging
+from dpytools.http_clients.base import BaseHttpClient
 
 class SlackNotifier:
 
-    def __init__(self):
-        # Set a webhok via an env var, ask Mike for a 
-        #web hook url.
-        ...
-
-    def notify(self, msg: str):
-        # Check formatting options for messages to slack.
-        # From memory you style it via sending a dictionary.
-        # It's a post request so do use the http client
-        # we've developing elsewhere in this library.
-        ...
\ No newline at end of file
+    def __init__(self, webhook_url):
+        if not webhook_url:
+            raise ValueError('webhook_url is not set')
+        self.webhook_url = webhook_url
+        self.http_client = BaseHttpClient()
+
+    def notify(self, msg_dict: dict):
+        """
+        Send a message to the Slack webhook.
+
+        The msg_dict parameter should be a dictionary that matches the
+        structure documented at https://api.slack.com/messaging/webhooks
+        """
+        try:
+            response = self.http_client.post(self.webhook_url, json=msg_dict)
+            response.raise_for_status()
+        except Exception as e:
+            logging.error(f'Failed to send notification: {e}')
+
+    def msg_str(self, msg: str):
+        """
+        Send a string message to the Slack webhook.
+
+        The msg parameter is wrapped into a dictionary before being sent.
+        """
+        self.notify({'text': msg})
\ No newline at end of file
diff --git a/tests/test_slack.py b/tests/test_slack.py
new file mode 100644
index 0000000..32b85db
--- /dev/null
+++ b/tests/test_slack.py
@@ -0,0 +1,35 @@
+import pytest
+from unittest.mock import patch, MagicMock
+from requests import HTTPError, Response
+from dpytools.http_clients.base import BaseHttpClient
+from dpytools.slack.slack import SlackNotifier
+
+@patch.object(BaseHttpClient, 'post')
+def test_notify(mock_post):
+    """
+    Test that the notify method sends a POST request
+    """
+    webhook_url = 'http://example.com'
+    mock_response = MagicMock(Response)
+    mock_response.status_code = 200
+    mock_post.return_value = mock_response
+
+    notifier = SlackNotifier(webhook_url)
+    notifier.notify({'text': 'Test message'})
+
+    mock_post.assert_called_once_with(webhook_url, json={'text': 'Test message'})
+
+@patch.object(BaseHttpClient, 'post')
+def test_msg_str(mock_post):
+    """
+    Test that the msg_str method sends a POST request with a string message
+    """
+    webhook_url = 'http://example.com'
+    mock_response = MagicMock(Response)
+    mock_response.status_code = 200
+    mock_post.return_value = mock_response
+
+    notifier = SlackNotifier(webhook_url)
+    notifier.msg_str('Test message')
+
+    mock_post.assert_called_once_with(webhook_url, json={'text': 'Test message'})
\ No newline at end of file