Some of my friends use MSN Messenger or Windows Live Messenger. Now I am aware of a variety of clients for OSX but I haven't been able to find one with the following abilities:
- accept / receive file transfers
- receive and send messages from contacts who are invisible (appear offline)
For example:
On Adium, when an invisible contact messages me, the message is sent successfully but never arrives on my end.
edit: I also tried aMSN unsuccessfully. Also I'm not sure if sending messages to contacts that appear offline is classified as offline messsages?