Mail Issues

Hi Folks,

I'm getting increasingly frustrated or suspicious with Mac Mail and/or my company... When I sent a mail to a single recipient this morning and the activity window notified me that the outgoing mail was "sending 3 of 3" ??? I then tried replying to a mail from someone and the activity window stated "sending 2 of 2". Can someone advise if this is this a strange feature of mac mail or can I just assume that someone is in blind copy of my outgoing mails?

Excuse the paranoia but I'd like to know at least...

Cheers