private messages... staying in outbox?

[Conrad]

It looks like some of my messages are just staying in the outbox? For example one I wrote in reply to Delicious on thursday seems to be still trapped there

[SNiiP3R]

That means he did not read it yet. All the read messages will go to the sent folder.

[Conrad]

That's OK then. He was being very helpful, wouldn't want him to think I was being rude not replying