This is an idea I had not thought of, but a good one.
> If you are sending an email with an attachment, add the attachment
> first, then compose the message, and then add email addresses to
> the send line. Now there's no chance you'll have to send the ever-
> popular "whoops, forgot to attach the file" follow-up.
> In fact, it's a good practice to always put the email addresses of
> the recipients in last, to ensure that an errant carriage return or
> mouseclick won't fire off the message half-baked.
It comes from: http://www.tradetricks.org/archives/2007_04.html