Not sure where to post this, so here it goes:
I tried to send a PM to a specific member on this board (for the moment being let's just call him "Doug").
Unfortunately it seems that this PM has now been stuck for several days in my so called "Outbox".
I guess this is similar to your Email Outbox where all the messages are stored that have not yet been sent out.
So what am I doing wrong there? How can I make this PM find its way to "Doug"?
Of course I might as well be misinterpreting this whole Outbox-thing and "Doug" already got my PM, but either had no time to respond to it or unfortunately had some other good reason to not respond to it.
Any help in this matter would be highly appreciated!

Don't want to spam "Doug" with thousands of PMs, which is why I haven't made any further attempts to send a PM to him.

Edit: Could one of the reasons be, that "Doug"'s PM-Box is full?