"PM sent" - what's the point?

[smp]

I have fallen to the issue where for whatever reason, there is no e-mail message alerting me to the fact that someone sent me a PM. I usually get the e-mail message, but sometimes I don't for no known reason. I assume the posting of "PM sent" is to alert the OP that there is a PM waiting, whether or not they were alerted by e-mail.

Just my thought...

smp