I've added Proxy support in MyOE, now you can add proxies server and chain them. Proxy chaining mean that one proxy will use another proxy to establish the connection... Imagine you have an ssh server running on port 443, and your company allows you to connect to HTTPS website through an HTTP proxy... that's the opportunity to do POP over SSH over HTTP... [of course, read your company policy before doing so...].
Oh, and by the way 0.14 is coming very soon.
And now the question: do you need socks proxy?