Collectible Card Game Headquarters

I've had PM's stuck in my outbox since last night. How do I get them to actually go where they're intended?

Edit: I've tried clearing board cookies from my phone and logging back in, and the pm's I've sent are still stuck in the outbox. This is decidedly frustrating.

I think the messages are sent, however they still appear in the outbox until the recipients read them. So this might actually be a new feature.