Im having the same problem. This is my background. using 2.7.1 and I am using a hosted gmail account with my domain. I cant get any conformation emails sent to me or any emails sent to my admin. But WP will send out email to everyone else who does not have an @mydomain.com email. I am not using any other plugins but Subscribe2. It took me two days of reading and trying different methods to get my hosted gmail account working. I even tried my free AOL and free Gmail with 4 different SMTP plugins along with my hosted gmail settings to no avail.
ive got send Admins notification set to both.
The only workaround that I have found is to change my admin email to one of my ‘free’ emails and forward that my main gmail hosted account. *shrugs* took me a ton of time to figure out how to get all emails sent and received. The biggest mistake was using my own emails for testing!
there are a TON of people who have hosted gmail problems. I hope some find my fix. but I am still looking for a ‘cleaner’ solution.