diff --git a/ntfy/bot.py b/ntfy/bot.py
index 918b9ab..1457e0a 100644
--- a/ntfy/bot.py
+++ b/ntfy/bot.py
@@ -2,6 +2,7 @@ import asyncio
 from html import escape
 import json
 from typing import Any, Dict, Tuple, List, Awaitable, Callable
+import markdown
 
 from aiohttp import ClientTimeout
 from maubot import MessageEvent, Plugin
@@ -639,9 +640,11 @@ class NtfyBot(Plugin):
         if click and not title:
             html_content += "%s<a href=\"%s\">%s</a>" % (
                 emoji, escape(click),
-                escape(body).replace("\n", "<br />"))
+                markdown.markdown(escape(body))
+                .replace("\n", "<br />"))
         else:
-            html_content += emoji + escape(body).replace("\n", "<br />")
+            html_content += (emoji + markdown.markdown(escape(body))
+                             .replace("\n", "<br />"))
 
         # add non-emoji tags
         if tags:
diff --git a/ntfy/exceptions.py b/ntfy/exceptions.py
new file mode 100644
index 0000000..8d749bb
--- /dev/null
+++ b/ntfy/exceptions.py
@@ -0,0 +1,8 @@
+class SubscriptionError(Exception):
+    """Raised when an error occurs while subscribing to a ntfy topic."""
+
+    def __init__(self, http_response: dict) -> None:
+        self._http_message = http_response
+        self.message = self._http_message.get("error")
+        self.code = self._http_message.get("code")
+        super().__init__(self.message)