Hi,
GMail on my Samsung Galaxy S3 works ok; however Aqua Mail Pro has stopped synching with my GMail accounts, from this morning, Australia time.
When I press the "synch" icon on an Aqua Mail account it turns momentarily yellow, then back to blue again.
I have three gmail accounts synching to a Smart Inbox.
Android 4.1.2, upgraded last week, has been working until today.