I am consistently running around 75%, with subject line "Confirm your email address". I am going to change it to "Please confirm your email address". I send t

I am consistently running around 75%, with subject line "Confirm your email address". I am going to change it to "Please confirm your email address". I send the confirmation emails through Google's email servers (Google Apps). update: If I break it down by domain, I see gmail->80%, yahoo->70%, and hotmail->66%.