Guild Messages

gabessdspf

Is there a limit to how often we can send guild mail? I sent out a message this morning but didn't have enough room to finish it. So I said it was part 1 of 2. I tried to send part 2 and the send button was just grayed out, I came back in 4 hours and the same thing, and I tried to get my 2nd in-command to do it and it was grayed out for him as well. What's the deal here?