Here's how to make NVDA read the basic HTML button. The link in post 2 will set basic HTML as default view but if standard still loads, follow these steps. The below link will do it automatically.
Set basic HTML as the default.
- Open gmail.
- Enter forms mode, focus mode, whatever it's called.
- Shift tab, until you hear basic HTML view button. This button is at the very top of the website. The button is not visible in browse mode. You need, need, need! To switch to forms mode in order to see the button.