diff --git a/bridge.py b/bridge.py
index 372deac..fca680c 100755
--- a/bridge.py
+++ b/bridge.py
@@ -30,8 +30,7 @@ def handle_irc(m):
 @shoutbox.on(lambda m: m.channel in channels)
 def handle_shoutbox(m):
     author = Shoutbox.normalize(m.author)
-    logging.debug(f"BBCODE: {m.bbcode}")
-    shoutbox.irc_clients[author][0].send(f"#{m.channel}", f"{m.text}")
+    shoutbox.irc_clients[author][0].send(f"#{m.channel}", f"{m.text}", bbcode=m.bbcode)
 
 
 irc.start(f"Shoutbox[{nick}]", password, nick)
diff --git a/irc.py b/irc.py
index 55006f1..38e9056 100644
--- a/irc.py
+++ b/irc.py
@@ -37,6 +37,7 @@ class IRC(object):
 
         self._send(f"USER {nick} * * :{nick}")
         self._send(f"NICK {nick}")
+        self._send(f"CAP REQ :message-tags")
         self._waitfor(lambda m: "NOTICE" in m and "/AUTH" in m)
 
         for i in range(3):
@@ -76,9 +77,13 @@ class IRC(object):
                         logging.info(f"matched {event.__name__}")
                         callback(message)
 
-    def send(self, target, message):
+    def send(self, target, message, bbcode=None):
         """ Send a message to the specified target (channel or user) """
-        self._send(f"PRIVMSG {target} :{message}")
+        if bbcode is not None:
+            bbcode = self._escapetag(bbcode)
+            self._send(f"@planet-casio.com/v4-bbcode={bbcode} PRIVMSG {target} :{message}")
+        else:
+            self._send(f"PRIVMSG {target} :{message}")
 
     def receive(self):
         """ Receive a private message """
@@ -156,6 +161,15 @@ class IRC(object):
             msg = self._recv()
         return msg
 
+    def _escapetag(self, text):
+        """ Escape text as an IRC tag """
+        text = text.replace("\\", "\\\\")
+        text = text.replace(";",  "\\:")
+        text = text.replace(" ",  "\\s")
+        text = text.replace("\r", "\\r")
+        text = text.replace("\n", "\\n")
+        return text
+
 
 class IRCMessage(object):
     r = re.compile("^:(?P<author>[\w.~|\[\]]+)(?:!(?P<host>\S+))? PRIVMSG (?P<to>\S+) :(?P<text>.+)")