'Mail' Question

Hello, I have a quick question about the built in 'mail' application

My question is this: I have an iPhone as well, and have the same email address account on both Mail and iPhone (Gmail account).

When I read an email on my phone, it automatically updates it, and marks it as read on both the iPhone and Gmail.com

But when I read an email on 'Mail' it does not do the same, it does not update it on gmail.com, so after a few days, even though I read all my emails via 'Mail' I will now have (x) amount of unread messages in gmail on both the site, and my phone

is there a way to change some settings in mail so this doesn't happen?

Thanks!