To anyone e-mailing orders - PLEASE use bcc instead of cc.
Ther are tons of viruses/worms that search a PC for e-mail address and they a) harvest the e-mail addresses for spammers and b) spoof the sender's address using the harvested addresses. Most people have measures to protect their machine from malware but certainly not everybody. it only take one person to jack it up for anyone on the distribution.
Once upon a time my malibox was clean of spam - not a single one. Then my dips**** sister started e-mailing stupid jokes and used cc instead of bcc. Now I get the most wonderful spam full of porn and offers for cheap viagra.
I beg of you - use bcc.