diff --git a/src/rooms.jl b/src/rooms.jl
index 1c0f14a..4d1b129 100644
--- a/src/rooms.jl
+++ b/src/rooms.jl
@@ -11,13 +11,19 @@ function invite(u::MatrixUser, room::String, user::String)
     post(u, string("rooms/",room,"/invite"), Dict("user_id" => user))
 end
 
-function send(u::MatrixUser, room_id::String, text::String)
-    res = post(u, string("rooms/", room_id, "/send/m.room.message"),
-               Dict("msgtype" => "m.text", "body" => text))
+"""Send message TEXT from user U to room ROOM_ID.
+If HTML is not nothing, send also an html formatted text."""
+function send(u::MatrixUser, room_id::String, text::String;
+              html::Union{Nothing,String} = nothing)
+    msg = Dict("msgtype" => "m.text", "body" => text)
+    if !isnothing(html)
+        msg["format"] = "org.matrix.custom.html"
+        msg["formatted_body"] = html
+    end
+    res = post(u, string("rooms/", room_id, "/send/m.room.message"), msg)
     JSON.parse(String(res.body))
 end
 
-
 function getroomevent(u::MatrixUser, room_id::String, event::String)
     get(u, string("rooms/", HTTP.escapeuri(room_id), "/state",
                   event == "" ? "" : string("/", event)))