Thanks for the reply. Perhaps I was unclear as I'm looking for something that will show the number of unread mails in all of my accounts, not just gmail. I did search GP and did find several apps on gmail, but did not see one for all accounts, except one that had bad reviews.
I'm a little surprised that the stock email program does not provide this feature, I thought perhaps something just needed to be set in the Settings. So an app/widget is needed? Any recommendations? And yes, I meant the home screen, not the lock screen.