In reply to climber34neil:
does it definitely go twice? i've noticed that if I check my sent box, emails from my phone will have two copies, and from my pc only one, but when I check with recipients they only get one copy. I've a feeling my provider (gmail) stores a copy automatically, as does my phone, and my phones copy then gets picked up by gmail as a separate email.
And if anyone knows how to stop that - please share!