I use a combination. I use Outlook, "Inbox" from Google, Gmail, and a browser shortcut I have to Gmail and Google calendar. Just go into the App Manager and disable the appropriate App. I also have notifications disabled for all except one.You can disable Gmail in
Settings > Apps > App Manager
or with a 3rd party app like BK Disabler.
I never use the Gmail app. I access some accts with the built-in Samsung app, and some with K9 Mail.
I keep the Gmail app to have contacts and calendar synced with my Gmail but use a different email app for my Gmail mail. Just turn off email sync in the Gmail account. Everything else will sync and your alternate email app can handle email sync.
I keep the Gmail app to have contacts and calendar synced with my Gmail but use a different email app for my Gmail mail. Just turn off email sync in the Gmail account. Everything else will sync and your alternate email app can handle email sync.