AWS: Really? 100 messages is a full mailbox?

I've been recently corresponding with someone at Amazon Web Services, and all of the sudden messages weren't going through to him. Then I saw this:Turns out that you can only send 100 messages within AWS until you have a full mailbox. 100 messages!? These are all text messages (no attachments) and so you could have thousands of messages before you took up enough room on their servers to even create a blip. I can't imagine this is really the best way of managing an internal messaging system today.