Group mailing flaw

I like the app, BUT unable to utilize the group feature when sending an email. I have made several groups in my gmail online, but cannot access them on this app. It causes great inconvenience especially when I need to send communications out quickly and without forgetting anyone, so I end up having to wait until I have access to a computer to do so. I’d give this app 5 stars if someone could fix this issue!

ajbaker8604 about Gmail - Email by Google, v5.0.180122